diff --git a/app/assets/javascripts/room.js b/app/assets/javascripts/room.js
index d5861d8f..d953f613 100644
--- a/app/assets/javascripts/room.js
+++ b/app/assets/javascripts/room.js
@@ -184,17 +184,19 @@ function copyInvite() {
   }
 }
 
-function copyAccess() {
-  $('#copy-code').attr("type", "text")
-  $('#copy-code').select()
+function copyAccess(target) {
+  input = target ? $("#copy-" + target + "-code") : $("#copy-code")
+  input.attr("type", "text")
+  input.select()
   if (document.execCommand("copy")) {
-    $('#copy-code').attr("type", "hidden")
-    copy = $("#copy-access")
+    input.attr("type", "hidden")
+    copy = target ? $("#copy-" + target + "-access") : $("#copy-access")
     copy.addClass('btn-success');
     copy.html("<i class='fas fa-check mr-1'></i>" + getLocalizedString("copied"))
     setTimeout(function(){
       copy.removeClass('btn-success');
-      copy.html("<i class='fas fa-copy mr-1'></i>" + getLocalizedString("room.copy_access"))
+      originalString = target ? getLocalizedString("room.copy_" + target + "_access") : getLocalizedString("room.copy_access")
+      copy.html("<i class='fas fa-copy mr-1'></i>" + originalString)
     }, 1000)
   }
 }
@@ -202,7 +204,9 @@ function copyAccess() {
 function showCreateRoom(target) {
   $("#create-room-name").val("")
   $("#create-room-access-code").text(getLocalizedString("modal.create_room.access_code_placeholder"))
+  $("#create-room-moderator-access-code").text(getLocalizedString("modal.create_room.moderator_access_code_placeholder"))
   $("#room_access_code").val(null)
+  $("#room_moderator_access_code").val(null)
 
   $("#createRoomModal form").attr("action", $("body").data('relative-root'))
   $("#room_mute_on_join").prop("checked", $("#room_mute_on_join").data("default"))
@@ -254,6 +258,16 @@ function showUpdateRoom(target) {
     $("#create-room-access-code").text(getLocalizedString("modal.create_room.access_code_placeholder"))
     $("#room_access_code").val(null)
   }
+
+  var moderatorAccessCode = modal.closest(".room-block").data("room-moderator-access-code")
+
+  if(moderatorAccessCode){
+    $("#create-room-moderator-access-code").text(getLocalizedString("modal.create_room.moderator_access_code") + ": " + moderatorAccessCode)
+    $("#room_moderator_access_code").val(moderatorAccessCode)
+  } else {
+    $("#create-room-moderator-access-code").text(getLocalizedString("modal.create_room.moderator_access_code_placeholder"))
+    $("#room_moderator_access_code").val(null)
+  }
 }
 
 function showDeleteRoom(target) {
@@ -291,6 +305,24 @@ function ResetAccessCode(){
   $("#room_access_code").val(null)
 }
 
+function generateModeratorAccessCode(){
+  const accessCodeLength = 6
+  var validCharacters = "abcdefghijklmopqrstuvwxyz"
+  var accessCode = ""
+
+  for( var i = 0; i < accessCodeLength; i++){
+    accessCode += validCharacters.charAt(Math.floor(Math.random() * validCharacters.length));
+  }
+
+  $("#create-room-moderator-access-code").text(getLocalizedString("modal.create_room.moderator_access_code") + ": " + accessCode)
+  $("#room_moderator_access_code").val(accessCode)
+}
+
+function ResetModeratorAccessCode(){
+  $("#create-room-moderator-access-code").text(getLocalizedString("modal.create_room.moderator_access_code_placeholder"))
+  $("#room_moderator_access_code").val(null)
+}
+
 function saveAccessChanges() {
   let listItemsToAdd = $("#user-list li:not(.remove-shared)").toArray().map(user => $(user).data("uid"))
 
diff --git a/app/assets/stylesheets/rooms.scss b/app/assets/stylesheets/rooms.scss
index 26709952..573ec5c4 100644
--- a/app/assets/stylesheets/rooms.scss
+++ b/app/assets/stylesheets/rooms.scss
@@ -32,8 +32,8 @@
   font-size: 20px !important;
 }
 
-.join-input {
-  height: 48px;
+.moderator-code-label {
+  margin-top: 150px !important;
 }
 
 .home-indicator {
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index d58f5d8d..75ac36f0 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -186,6 +186,12 @@ class ApplicationController < ActionController::Base
   end
   helper_method :recording_consent_required?
 
+  # Indicates whether users are allowed to add moderator access codes to rooms
+  def moderator_code_allowed?
+    @settings.get_value("Moderator Access Codes") == "true"
+  end
+  helper_method :moderator_code_allowed?
+
   # Returns a list of allowed file types
   def allowed_file_types
     Rails.configuration.allowed_file_types
diff --git a/app/controllers/concerns/joiner.rb b/app/controllers/concerns/joiner.rb
index 96958c05..6c6b016e 100644
--- a/app/controllers/concerns/joiner.rb
+++ b/app/controllers/concerns/joiner.rb
@@ -50,10 +50,11 @@ module Joiner
   def join_room(opts)
     @room_settings = JSON.parse(@room[:room_settings])
 
-    if room_running?(@room.bbb_id) || @room.owned_by?(current_user) || room_setting_with_config("anyoneCanStart")
+    moderator_privileges = @room.owned_by?(current_user) || valid_moderator_access_code(session[:moderator_access_code])
+    if room_running?(@room.bbb_id) || room_setting_with_config("anyoneCanStart") || moderator_privileges
 
       # Determine if the user needs to join as a moderator.
-      opts[:user_is_moderator] = @room.owned_by?(current_user) || room_setting_with_config("joinModerator") || @shared_room
+      opts[:user_is_moderator] = room_setting_with_config("joinModerator") || @shared_room || moderator_privileges
       opts[:record] = record_meeting
       opts[:require_moderator_approval] = room_setting_with_config("requireModeratorApproval")
       opts[:mute_on_start] = room_setting_with_config("muteOnStart")
diff --git a/app/controllers/rooms_controller.rb b/app/controllers/rooms_controller.rb
index cc06e4a5..2de6aac6 100644
--- a/app/controllers/rooms_controller.rb
+++ b/app/controllers/rooms_controller.rb
@@ -44,7 +44,9 @@ class RoomsController < ApplicationController
     return redirect_to current_user.main_room, flash: { alert: I18n.t("room.room_limit") } if room_limit_exceeded
 
     # Create room
-    @room = Room.new(name: room_params[:name], access_code: room_params[:access_code])
+    @room = Room.new(name: room_params[:name],
+                     access_code: room_params[:access_code],
+                     moderator_access_code: room_params[:moderator_access_code])
     @room.owner = current_user
     @room.room_settings = create_room_settings_string(room_params)
 
@@ -109,8 +111,9 @@ class RoomsController < ApplicationController
     @shared_room = room_shared_with_user
 
     unless @room.owned_by?(current_user) || @shared_room
-      # Don't allow users to join unless they have a valid access code or the room doesn't have an access code
-      if @room.access_code && !@room.access_code.empty? && @room.access_code != session[:access_code]
+      # Don't allow users to join unless they have a valid access code or the room doesn't have an access codes
+      valid_access_code = !@room.access_code.present? || @room.access_code == session[:access_code]
+      if !valid_access_code && !valid_moderator_access_code(session[:moderator_access_code])
         return redirect_to room_path(room_uid: params[:room_uid]), flash: { alert: I18n.t("room.access_code_required") }
       end
 
@@ -203,7 +206,8 @@ class RoomsController < ApplicationController
       @room.update_attributes(
         name: options[:name],
         room_settings: room_settings_string,
-        access_code: options[:access_code]
+        access_code: options[:access_code],
+        moderator_access_code: options[:moderator_access_code]
       )
 
       flash[:success] = I18n.t("room.update_settings_success")
@@ -321,9 +325,16 @@ class RoomsController < ApplicationController
 
   # POST /:room_uid/login
   def login
-    session[:access_code] = room_params[:access_code]
+    # use same form for access_code and moderator_access_code
+    if valid_moderator_access_code(room_params[:access_code])
+      session[:moderator_access_code] = room_params[:access_code]
+    else
+      session[:access_code] = room_params[:access_code]
+    end
 
-    flash[:alert] = I18n.t("room.access_code_required") if session[:access_code] != @room.access_code
+    if session[:access_code] != @room.access_code && !valid_moderator_access_code(session[:moderator_access_code])
+      flash[:alert] = I18n.t("room.access_code_required")
+    end
 
     redirect_to room_path(@room.uid)
   end
@@ -345,7 +356,7 @@ class RoomsController < ApplicationController
   def room_params
     params.require(:room).permit(:name, :auto_join, :mute_on_join, :access_code,
       :require_moderator_approval, :anyone_can_start, :all_join_moderator,
-      :recording, :presentation)
+      :recording, :presentation, :moderator_access_code)
   end
 
   # Find the room from the uid.
@@ -412,6 +423,11 @@ class RoomsController < ApplicationController
   end
   helper_method :room_limit_exceeded
 
+  def valid_moderator_access_code(code)
+    code == @room.moderator_access_code && !@room.moderator_access_code.blank? && moderator_code_allowed?
+  end
+  helper_method :valid_moderator_access_code
+
   def record_meeting
     # If the require consent setting is checked, then check the room setting, else, set to true
     if recording_consent_required?
diff --git a/app/helpers/admins_helper.rb b/app/helpers/admins_helper.rb
index 91f3a2e7..f21f877b 100644
--- a/app/helpers/admins_helper.rb
+++ b/app/helpers/admins_helper.rb
@@ -89,6 +89,14 @@ module AdminsHelper
     end
   end
 
+  def moderator_codes_string
+    if @settings.get_value("Moderator Access Codes") == "true"
+      I18n.t("administrator.site_settings.moderator_codes.enabled")
+    else
+      I18n.t("administrator.site_settings.moderator_codes.disabled")
+    end
+  end
+
   def log_level_string
     case Rails.logger.level
     when 0
diff --git a/app/models/setting.rb b/app/models/setting.rb
index 1ee18192..27cff084 100644
--- a/app/models/setting.rb
+++ b/app/models/setting.rb
@@ -66,6 +66,8 @@ class Setting < ApplicationRecord
       Rails.configuration.shared_access_default
     when "Preupload Presentation"
       Rails.configuration.preupload_presentation_default
+    when "Moderator Access Codes"
+      Rails.configuration.moderator_codes_default
     when "Room Configuration Mute On Join"
       room_config_setting("mute-on-join")
     when "Room Configuration Require Moderator"
diff --git a/app/views/admins/components/site_settings/_settings.html.erb b/app/views/admins/components/site_settings/_settings.html.erb
index 464d3088..fa4cf6eb 100644
--- a/app/views/admins/components/site_settings/_settings.html.erb
+++ b/app/views/admins/components/site_settings/_settings.html.erb
@@ -143,6 +143,27 @@
       </div>
     </div>
   </div>
+  <div class="row mb-2">
+    <div class="col-12">
+      <div class="form-group">
+        <label class="form-label"><%= t("administrator.site_settings.moderator_codes.title") %></label>
+        <label class="form-label text-muted"><%= t("administrator.site_settings.moderator_codes.info") %></label>
+        <div class="dropdown">
+          <button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+            <%= moderator_codes_string %>
+          </button>
+          <div class="dropdown-menu" aria-labelledby="room-auth">
+            <%= button_to admin_update_settings_path(setting: "Moderator Access Codes", value: "true"), class: "dropdown-item", "data-disable": "" do %>
+              <%= t("administrator.site_settings.moderator_codes.enabled") %>
+            <% end %>
+            <%= button_to admin_update_settings_path(setting: "Moderator Access Codes", value: "false"), class: "dropdown-item", "data-disable": "" do %>
+              <%= t("administrator.site_settings.moderator_codes.disabled") %>
+            <% end %>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
   <div class="row">
     <div class="col-12">
       <div class="form-group">
diff --git a/app/views/rooms/components/_enter_access_code_form.html.erb b/app/views/rooms/components/_enter_access_code_form.html.erb
new file mode 100644
index 00000000..4f1beddd
--- /dev/null
+++ b/app/views/rooms/components/_enter_access_code_form.html.erb
@@ -0,0 +1,29 @@
+<%
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+# You should have received a copy of the GNU Lesser General Public License along
+# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
+%>
+
+<%= form_for :room, url: login_room_path(@room.uid) do |f| %>
+  <div class="input-group join-input">
+    <%= f.text_field :access_code,
+          required: true,
+          class: "form-control join-form",
+          placeholder: access_code_type == 'moderator' ? t("room.enter_the_moderator_access_code") : t("room.enter_the_access_code"),
+          value: "" ,
+          autofocus: true,
+          maxlength: 26 %>
+	<span class="input-group-append">
+	  <%= f.button t("room.login"), type: :submit, class: "btn btn-primary btn-sm px-7 form-control join-form" %>
+	</span>
+  </div>
+<% end %>
diff --git a/app/views/rooms/components/_room_block.html.erb b/app/views/rooms/components/_room_block.html.erb
index 4b57db74..d2a9baf2 100644
--- a/app/views/rooms/components/_room_block.html.erb
+++ b/app/views/rooms/components/_room_block.html.erb
@@ -13,7 +13,7 @@
 # with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 %>
 
-<div data-path="<%= update_settings_path(room) %>" data-room-access-code="<%= room.access_code %>" class="card room-block">
+<div data-path="<%= update_settings_path(room) %>" data-room-access-code="<%= room.access_code %>" data-room-moderator-access-code="<%= room.moderator_access_code %>" class="card room-block">
   <div class="card-body p-1">
     <table class="table table-hover table-vcenter text-wrap table-no-border">
       <tbody class="no-border-top">
diff --git a/app/views/rooms/join.html.erb b/app/views/rooms/join.html.erb
index cac7a022..f38f9e4d 100644
--- a/app/views/rooms/join.html.erb
+++ b/app/views/rooms/join.html.erb
@@ -15,23 +15,15 @@
 
 <% content_for(:page_desc) { t("room.invitation_description", name: @room.name) } %>
 
-<% valid_access_code = @room.access_code.nil? || @room.access_code.empty? || @room.access_code == session[:access_code] %>
-<%= render 'rooms/components/room_event', render_recordings: valid_access_code do %>
+<% access_code_set = @room.access_code.present? %>
+<% valid_access_code = access_code_set && @room.access_code == session[:access_code] %>
+<% moderator_access_code_set = @room.moderator_access_code.present? && moderator_code_allowed? %>
+<% valid_moderator_access_code = valid_moderator_access_code(session[:moderator_access_code]) %>
+
+<%= render 'rooms/components/room_event', render_recordings: valid_access_code || valid_moderator_access_code do %>
   <% if room_authentication_required %>
     <h2><%= t("administrator.site_settings.authentication.user-info") %></h2>
-  <% elsif !valid_access_code %>
-    <%= form_for :room, url: login_room_path(@room.uid) do |f| %>
-      <div class="input-group join-input">
-        <%= f.text_field :access_code,
-              required: true,
-              class: "form-control join-form",
-              placeholder: t("room.enter_the_access_code"),
-              value: "" ,
-              autofocus: true %>
-        <%= f.submit t("room.login"), class: "btn btn-primary btn-sm col-sm-3 form-control join-form" %>
-      </div>
-    <% end %>
-  <% else %>
+  <% elsif valid_moderator_access_code || valid_access_code || !access_code_set %>
     <%= form_for room_path(@room), method: :post do |f| %>
       <div class="input-group">
         <%= f.hidden_field(:search, :value => params[:search])%>
@@ -59,5 +51,12 @@
         </label>
       <% end %>
     <% end %>
+    <% if moderator_access_code_set && !valid_moderator_access_code %>
+      <!-- <hr class="mt-2 float-right w-100 moderator-code-hr"> -->
+      <label class="moderator-code-label form-label"><%= t("room.optional_moderator_access_code") %></label>
+      <%= render "rooms/components/enter_access_code_form", access_code_type: 'moderator' %>
+    <% end %>
+  <% else %>
+    <%= render "rooms/components/enter_access_code_form", access_code_type: 'standard_access' %>
   <% end %>
 <% end %>
diff --git a/app/views/rooms/show.html.erb b/app/views/rooms/show.html.erb
index 3feb5219..ab190452 100644
--- a/app/views/rooms/show.html.erb
+++ b/app/views/rooms/show.html.erb
@@ -1,140 +1,147 @@
-<%
-# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
-# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
-# This program is free software; you can redistribute it and/or modify it under the
-# terms of the GNU Lesser General Public License as published by the Free Software
-# Foundation; either version 3.0 of the License, or (at your option) any later
-# version.
-#
-# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
-# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
-# You should have received a copy of the GNU Lesser General Public License along
-# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
-%>
-
-<% exceeds_limit = current_room_exceeds_limit(@room)%>
-<% if exceeds_limit%>
-  <div class="alert alert-danger alert-dismissible text-center mb-0">
-    <%= t("room.room_limit_exceeded", difference: @diff) %>
-  </div>
-<% end %>
-<div class="background pb-1">
-  <div class="container">
-    <div class="row pt-7 pt-sm-9 mb-7">
-      <div class="col-lg-9 col-sm-12">
-        <div id="room-title" class="display-3 form-inline <%= 'edit_hover_class' if current_user.main_room != @room %>" data-path="<%= update_settings_path(@room) %>">
-           <h1 contenteditable=false id="user-text" class="display-3 text-left mb-3 font-weight-400 text-break"><%= title(@room.name) %></h1>
-          <% if current_user.main_room == @room %>
-            <a class="disable-click"><i class="fas fa-home align-top home-indicator ml-2"></i></a>
-          <% else %>
-            <a><i id="edit-room" class="fa fa-edit align-top home-indicator ml-2" data-edit-room="<%= @room.uid %>"></i></a>
-          <% end %>
-        </div>
-        <h4 class="text-left mb-6"><%= @room.sessions %> <%= t("room.sessions") %><% unless hide_recording_tables %> | <%= @recordings.length %> <%= t("room.recordings") %><% end %></h4>
-        <% unless exceeds_limit %>
-          <label class="form-label"><%= t("room.invite_participants") %></label>
-          <div class="row">
-            <div class="col-lg-6 col-md-12 mt-2">
-              <div class="input-icon invite-link-input">
-                <span class="input-icon-addon">
-                  <i class="fas fa-link"></i>
-                </span>
-                <input id="invite-url" type="text" class="form-control w-100" value="<%= request.base_url + @room.invite_path %>" readonly="">
-              </div>
-            </div>
-            <div class="col-lg-6 pr-lg-7 col-md-12 pl-lg-0">
-              <div class="row">
-                <div class="col-sm-6 mt-2">
-                  <button id="copy-invite" class="btn btn-primary btn-block" onclick="copyInvite()">
-                    <i class="fas fa-copy mr-1"></i>
-                    <%= t("copy") %>
-                  </button>
-                </div>
-                <div class="col-sm-6 pl-0 mt-2">
-                  <% if @room.access_code.present? %>
-                    <input id="copy-code" value="<%= @room.access_code %>" type="hidden">
-                    <button id="copy-access" class="btn btn-secondary btn-block" onclick="copyAccess()">
-                      <i class="fas fa-copy mr-1"></i>
-                      <%= t("room.copy_access") %>
-                    </button>
-                  <% end %>
-                  <% if Rails.configuration.enable_google_calendar_button %>
-                    <a href="<%= google_calendar_path %>" target="__blank" id="schedule" class="btn btn-primary btn-block mt-2">
-                      <i class="fas fa-calendar-plus"></i>
-                      <%= t("add_to_google_calendar") %>
-                    </a>
-                  <% end %>
-                </div>
-              </div>
-            </div>
-          </div>
-        <% end %>
-      </div>
-      <div class="col-lg-3 col-sm-12 force-bottom mt-5">
-        <% if @room_running %>
-          <%= button_to t("room.join"), room_path(@room), class: "btn btn-primary btn-block px-7 start-button float-right", "data-disable": "" %>
-        <% else %>
-          <% unless exceeds_limit %>
-            <%= button_to t("room.start"), start_room_path(@room), class: "btn btn-primary btn-block px-7 start-button float-right", "data-disable": "" %>
-          <% end %>
-        <% end %>
-      </div>
-    </div>
-
-    <% if total_room_count(current_user) > 5 %>
-      <div class="input-icon invite-link-input mb-3">
-        <span class="input-icon-addon">
-          <i class="fas fa-search"></i>
-          </span>
-        <input id="room-search" type="text" placeholder="<%= t("room.search") %>" class="form-control w-100" onChange="filterRooms()" onKeyUp="filterRooms()">
-        <span id="clear-room-search" class="text-primary" onclick="clearRoomSearch()">
-          <i class="fas fa-times"></i>
-        </span>
-      </div>
-    <% end %>
-
-    <div id="room_block_container" class="row mb-5">
-      <% if current_user.role.get_permission("can_create_rooms") %>
-        <% current_user.ordered_rooms.each do |room| %>
-          <div class="col-lg-4 col-md-6 col-sm-12">
-            <%= link_to room do %>
-              <%= render "rooms/components/room_block", room: room %>
-            <% end %>
-          </div>
-        <% end %>
-      <% end %>
-
-      <% if shared_access_allowed %>
-        <% current_user.shared_rooms.each do |room| %>
-          <div class="col-lg-4 col-md-6 col-sm-12">
-            <%= link_to room do %>
-              <%= render "rooms/components/shared_room_block", room: room %>
-            <% end %>
-          </div>
-        <% end %>
-      <% end %>
-
-      <% if current_user.role.get_permission("can_create_rooms") && !room_limit_exceeded %>
-        <%= render "rooms/components/create_room_block"%>
-      <% end %>
-    </div>
-  </div>
-</div>
-
-<% unless hide_recording_tables %>
-  <%= render "shared/sessions", recordings: @recordings, pagy: @pagy, only_public: false, shared_room: @shared_room, user_recordings: false, title: t("room.recordings")%>
-<% end %>
-
-<%= render "shared/modals/delete_room_modal" %>
-
-<%= render "shared/modals/create_room_modal" %>
-
-<% if preupload_allowed? %>
-  <%= render "shared/modals/preupload_presentation_modal" %>
-<% end %>
-
-<% if shared_access_allowed %>
-  <%= render "shared/modals/share_room_modal" %>
-  <%= render "shared/modals/remove_access_modal" %>
-<% end %>
+<%
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+# You should have received a copy of the GNU Lesser General Public License along
+# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
+%>
+
+<% exceeds_limit = current_room_exceeds_limit(@room)%>
+<% if exceeds_limit%>
+  <div class="alert alert-danger alert-dismissible text-center mb-0">
+    <%= t("room.room_limit_exceeded", difference: @diff) %>
+  </div>
+<% end %>
+<div class="background pb-1">
+  <div class="container">
+    <div class="row pt-7 pt-sm-9 mb-7">
+      <div class="col-lg-9 col-sm-12">
+        <div id="room-title" class="display-3 form-inline <%= 'edit_hover_class' if current_user.main_room != @room %>" data-path="<%= update_settings_path(@room) %>">
+           <h1 contenteditable=false id="user-text" class="display-3 text-left mb-3 font-weight-400 text-break"><%= title(@room.name) %></h1>
+          <% if current_user.main_room == @room %>
+            <a class="disable-click"><i class="fas fa-home align-top home-indicator ml-2"></i></a>
+          <% else %>
+            <a><i id="edit-room" class="fa fa-edit align-top home-indicator ml-2" data-edit-room="<%= @room.uid %>"></i></a>
+          <% end %>
+        </div>
+        <h4 class="text-left mb-6"><%= @room.sessions %> <%= t("room.sessions") %><% unless hide_recording_tables %> | <%= @recordings.length %> <%= t("room.recordings") %><% end %></h4>
+        <% unless exceeds_limit %>
+          <label class="form-label"><%= t("room.invite_participants") %></label>
+          <div class="row">
+            <div class="col-lg-6 col-md-12 mt-2">
+              <div class="input-icon invite-link-input">
+                <span class="input-icon-addon">
+                  <i class="fas fa-link"></i>
+                </span>
+                <input id="invite-url" type="text" class="form-control w-100" value="<%= request.base_url + @room.invite_path %>" readonly="">
+              </div>
+            </div>
+            <div class="col-lg-6 pr-lg-7 col-md-12 pl-lg-0">
+              <div class="row">
+                <div class="col-sm-6 mt-2">
+                  <button id="copy-invite" class="btn btn-primary btn-block" onclick="copyInvite()">
+                    <i class="fas fa-copy mr-1"></i>
+                    <%= t("copy") %>
+                  </button>
+                </div>
+                <div class="btn-group-vertical col-sm-6 pl-0 mt-2">
+                  <% if @room.access_code.present? %>
+                    <input id="copy-code" value="<%= @room.access_code %>" type="hidden">
+                    <button id="copy-access" class="btn btn-secondary btn-block" onclick="copyAccess()">
+                      <i class="fas fa-copy mr-1"></i>
+                      <%= t("room.copy_access") %>
+                    </button>
+                  <% end %>
+                  <% if moderator_code_allowed? && @room.moderator_access_code.present? %>
+                    <input id="copy-moderator-code" value="<%= @room.moderator_access_code %>" type="hidden">
+                    <button id="copy-moderator-access" class="btn btn-secondary btn-block" onclick="copyAccess('moderator')">
+                      <i class="fas fa-copy mr-1"></i>
+                      <%= t("room.copy_moderator_access") %>
+                    </button>
+                  <% end %>
+                  <% if Rails.configuration.enable_google_calendar_button %>
+                    <a href="<%= google_calendar_path %>" target="__blank" id="schedule" class="btn btn-primary btn-block mt-2">
+                      <i class="fas fa-calendar-plus"></i>
+                      <%= t("add_to_google_calendar") %>
+                    </a>
+                  <% end %>
+                </div>
+              </div>
+            </div>
+          </div>
+        <% end %>
+      </div>
+      <div class="col-lg-3 col-sm-12 force-bottom mt-5">
+        <% if @room_running %>
+          <%= button_to t("room.join"), room_path(@room), class: "btn btn-primary btn-block px-7 start-button float-right", "data-disable": "" %>
+        <% else %>
+          <% unless exceeds_limit %>
+            <%= button_to t("room.start"), start_room_path(@room), class: "btn btn-primary btn-block px-7 start-button float-right", "data-disable": "" %>
+          <% end %>
+        <% end %>
+      </div>
+    </div>
+
+    <% if total_room_count(current_user) > 5 %>
+      <div class="input-icon invite-link-input mb-3">
+        <span class="input-icon-addon">
+          <i class="fas fa-search"></i>
+          </span>
+        <input id="room-search" type="text" placeholder="<%= t("room.search") %>" class="form-control w-100" onChange="filterRooms()" onKeyUp="filterRooms()">
+        <span id="clear-room-search" class="text-primary" onclick="clearRoomSearch()">
+          <i class="fas fa-times"></i>
+        </span>
+      </div>
+    <% end %>
+
+    <div id="room_block_container" class="row mb-5">
+      <% if current_user.role.get_permission("can_create_rooms") %>
+        <% current_user.ordered_rooms.each do |room| %>
+          <div class="col-lg-4 col-md-6 col-sm-12">
+            <%= link_to room do %>
+              <%= render "rooms/components/room_block", room: room %>
+            <% end %>
+          </div>
+        <% end %>
+      <% end %>
+
+      <% if shared_access_allowed %>
+        <% current_user.shared_rooms.each do |room| %>
+          <div class="col-lg-4 col-md-6 col-sm-12">
+            <%= link_to room do %>
+              <%= render "rooms/components/shared_room_block", room: room %>
+            <% end %>
+          </div>
+        <% end %>
+      <% end %>
+
+      <% if current_user.role.get_permission("can_create_rooms") && !room_limit_exceeded %>
+        <%= render "rooms/components/create_room_block"%>
+      <% end %>
+    </div>
+  </div>
+</div>
+
+<% unless hide_recording_tables %>
+  <%= render "shared/sessions", recordings: @recordings, pagy: @pagy, only_public: false, shared_room: @shared_room, user_recordings: false, title: t("room.recordings")%>
+<% end %>
+
+<%= render "shared/modals/delete_room_modal" %>
+
+<%= render "shared/modals/create_room_modal" %>
+
+<% if preupload_allowed? %>
+  <%= render "shared/modals/preupload_presentation_modal" %>
+<% end %>
+
+<% if shared_access_allowed %>
+  <%= render "shared/modals/share_room_modal" %>
+  <%= render "shared/modals/remove_access_modal" %>
+<% end %>
diff --git a/app/views/shared/modals/_create_room_modal.html.erb b/app/views/shared/modals/_create_room_modal.html.erb
index cab6f6b4..e85d9ecb 100644
--- a/app/views/shared/modals/_create_room_modal.html.erb
+++ b/app/views/shared/modals/_create_room_modal.html.erb
@@ -43,6 +43,19 @@
               </span>
             </div>
 
+            <% if moderator_code_allowed? %>
+              <div class="input-icon mb-2">
+                <span onclick="generateModeratorAccessCode()" class="input-icon-addon allow-icon-click cursor-pointer">
+                  <i class="fas fa-dice"></i>
+                </span>
+                <%= f.label :moderator_access_code, t("modal.create_room.moderator_access_code_placeholder"), id: "create-room-moderator-access-code", class: "form-control" %>
+                <%= f.hidden_field :moderator_access_code %>
+                <span onclick="ResetModeratorAccessCode()" class="input-icon-addon allow-icon-click cursor-pointer">
+                  <i class="far fa-trash-alt"></i>
+                </span>
+              </div>
+            <% end %>
+
             <% mute = room_configuration("Room Configuration Mute On Join") %>
             <% if mute != "disabled" %>
               <label class="custom-switch pl-0 mt-3 mb-3 w-100 text-left d-inline-block <%= "enabled-setting" if mute == "enabled" %>">
diff --git a/config/application.rb b/config/application.rb
index e683c15e..bed9f47c 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -175,6 +175,9 @@ module Greenlight
     # Don't allow users to preupload presentations by default
     config.preupload_presentation_default = "false"
 
+    # Don't show option to generate moderator access codes
+    config.moderator_codes_default = "false"
+
     # Default admin password
     config.admin_password_default = ENV['ADMIN_PASSWORD'] || 'administrator'
   end
diff --git a/config/locales/de_DE.yml b/config/locales/de_DE.yml
index fbcc77e9..a08504fb 100644
--- a/config/locales/de_DE.yml
+++ b/config/locales/de_DE.yml
@@ -105,6 +105,11 @@ de_DE:
           approval: Zulassen/Ablehnen
           invite: Teilnahme durch Einladung
           open: Offene Registrierung
+      moderator_codes:
+        info: "Mit gültigen Moderatorencodes können Nutzerinnen einem Raum als Moderator beitreten, ohne sich vorher einen Account anzulegen und einzeln Zugriff zu erhalten. Die Einstellung kann für jeden Raum seperat getätigt werden."
+        title: Ermöglicht die Erstellung von Moderatorencodes
+        enabled: Aktiviert
+        disabled: Deaktiviert
       rooms:
         info: "Limitiert die Anzahl der Räume, die Nutzer einrichten können (inklusive des Startraums). Diese Einstellung wirkt sich nicht auf Administratoren aus."
         title: Anzahl der Räume pro Nutzer
@@ -390,7 +395,9 @@ de_DE:
       title: Neue Rolle erstellen
     create_room:
       access_code: Zugangscode
+      moderator_access_code: Moderatorencode
       access_code_placeholder: Generieren eines optionalen Raumzugangscodes
+      moderator_access_code_placeholder: Generieren eines optionalen Moderatorencodes
       auto_join: Automatisch dem Raum beitreten
       create: Raum erstellen
       free_delete: Sie können den Raum jederzeit wieder löschen.
@@ -543,6 +550,7 @@ de_DE:
     access_code_required: "Bitte geben Sie einen gültigen Zugangscode ein, um den Raum zu betreten"
     add_presentation: Präsentation hinzufügen
     copy_access: Zugangscode kopieren
+    copy_moderator_access: Moderatorcode kopieren
     create_room: Raum erstellen
     create_room_error: Bei der Erstellung des Raums ist ein Fehler aufgetreten
     create_room_success: Raum erfolgreich erstellt
@@ -551,6 +559,8 @@ de_DE:
       success: Raum erfolgreich gelöscht
       fail: "Raum konnte nicht gelöscht werden (%{error})"
     enter_the_access_code: Raumzugangscode bitte eingeben
+    enter_the_moderator_access_code: "Moderatorencode bitte eingeben!"
+    optional_moderator_access_code: "Optionaler Moderatorencode:"
     invalid_provider: "Sie haben eine ungültige URL eingegeben, bitte überprüfen Sie die URL und versuchen Sie es erneut."
     invitation_description: "Sie wurden zu %{name} über BigBlueButton zur Teilnahme eingeladen. Um beizutreten, klicken Sie auf den obigen Link und geben Sie Ihren Namen ein."
     invited: Sie wurden zur Teilnahme eingeladen
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 81bbc13c..673c6f31 100755
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -111,6 +111,11 @@ en:
       shared_access:
         info: Setting to disabled will remove the button from the Room options dropdown, preventing users from sharing rooms
         title: Allow Users to Share Rooms
+      moderator_codes:
+        info: "With valid moderator codes, users can join a room as a moderator without having to create an account and receive access individually. The setting can be made separately for each room."
+        title: Enables the generation of moderator codes
+        enabled: Enabled
+        disabled: Disabled
       subtitle: Customize Greenlight
       tabs:
         appearance: Appearance
@@ -391,7 +396,9 @@ en:
       title: Create New Role
     create_room:
       access_code: Access Code
+      moderator_access_code: Moderator Code
       access_code_placeholder: Generate an optional room access code
+      moderator_access_code_placeholder: Generate an optional code for moderators
       auto_join: Automatically join me into the room
       create: Create Room
       free_delete: You will be free to delete this room at any time.
@@ -544,6 +551,7 @@ en:
     access_code_required: Please enter a valid access code to join the room
     add_presentation: Add Presentation
     copy_access: Copy Access Code
+    copy_moderator_access: Copy Moderator Code
     create_room: Create a Room
     create_room_error: There was an error creating the room
     create_room_success: Room created successfully
@@ -552,6 +560,8 @@ en:
       success: Room deleted successfully
       fail: Failed to delete room (%{error})
     enter_the_access_code: Enter the room's access code
+    enter_the_moderator_access_code: Enter the room's moderator code!
+    optional_moderator_access_code: "Optional Moderator Code:"
     invalid_provider: You have entered an invalid url. Please check the url and try again.
     invitation_description: You have been invited to join %{name} using BigBlueButton. To join, click the link above and enter your name.
     invited: You have been invited to join
diff --git a/db/migrate/20210108032132_add_moderator_access_code_to_rooms.rb b/db/migrate/20210108032132_add_moderator_access_code_to_rooms.rb
new file mode 100644
index 00000000..8da6eb14
--- /dev/null
+++ b/db/migrate/20210108032132_add_moderator_access_code_to_rooms.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddModeratorAccessCodeToRooms < ActiveRecord::Migration[5.2]
+  def change
+    add_column :rooms, :moderator_access_code, :string, null: true, default: nil
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index dbc2924a..28a7d1ce 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_12_14_232153) do
+ActiveRecord::Schema.define(version: 2021_01_08_032132) do
 
   create_table "active_storage_attachments", force: :cascade do |t|
     t.string "name", null: false
@@ -96,6 +96,7 @@ ActiveRecord::Schema.define(version: 2020_12_14_232153) do
     t.string "attendee_pw"
     t.string "access_code"
     t.boolean "deleted", default: false, null: false
+    t.string "moderator_access_code"
     t.index ["bbb_id"], name: "index_rooms_on_bbb_id"
     t.index ["deleted"], name: "index_rooms_on_deleted"
     t.index ["last_session"], name: "index_rooms_on_last_session"
diff --git a/spec/controllers/rooms_controller_spec.rb b/spec/controllers/rooms_controller_spec.rb
index f427a279..34063a44 100644
--- a/spec/controllers/rooms_controller_spec.rb
+++ b/spec/controllers/rooms_controller_spec.rb
@@ -273,6 +273,21 @@ describe RoomsController, type: :controller do
       expect(response).to redirect_to(join_path(@owner.main_room, "Join Name", {}, response.cookies["guest_id"]))
     end
 
+    it "should use join name if user is not logged in and meeting running and moderator access code is enabled and set" do
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
+      allow_any_instance_of(Setting).to receive(:get_value).and_call_original
+      allow_any_instance_of(Setting).to receive(:get_value).with("Moderator Access Codes").and_return("true")
+
+      room = Room.new(name: "test", moderator_access_code: "abcdef")
+      room.room_settings = "{ }"
+      room.owner = @owner
+      room.save
+
+      post :join, params: { room_uid: room, join_name: "Join Name" }, session: { moderator_access_code: "abcdef" }
+
+      expect(response).to redirect_to(join_path(room, "Join Name", { user_is_moderator: true }, response.cookies["guest_id"]))
+    end
+
     it "should render wait if meeting isn't running" do
       allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(false)
 
@@ -398,6 +413,62 @@ describe RoomsController, type: :controller do
       expect(response).to redirect_to room_path(protected_room.uid)
     end
 
+    it "should join the room as moderator if the user has the moderator_access code (and regular access code is not set)" do
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
+      allow_any_instance_of(Setting).to receive(:get_value).and_call_original
+      allow_any_instance_of(Setting).to receive(:get_value).with("Moderator Access Codes").and_return("true")
+
+      room = Room.new(name: "test", moderator_access_code: "abcdef")
+      room.room_settings = "{ }"
+      room.owner = @owner
+      room.save
+
+      post :join, params: { room_uid: room, join_name: "Join Name" }, session: { moderator_access_code: "abcdef" }
+
+      expect(response).to redirect_to(join_path(room, "Join Name", { user_is_moderator: true }, response.cookies["guest_id"]))
+    end
+
+    it "should join the room as moderator if the user has the moderator_access code (and regular access code is set)" do
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
+      allow_any_instance_of(Setting).to receive(:get_value).and_call_original
+      allow_any_instance_of(Setting).to receive(:get_value).with("Moderator Access Codes").and_return("true")
+
+      room = Room.new(name: "test", access_code: "123456", moderator_access_code: "abcdef")
+      room.room_settings = "{ }"
+      room.owner = @owner
+      room.save
+
+      post :join, params: { room_uid: room, join_name: "Join Name" }, session: { moderator_access_code: "abcdef" }
+
+      expect(response).to redirect_to(join_path(room, "Join Name", { user_is_moderator: true }, response.cookies["guest_id"]))
+    end
+
+    it "should redirect to login if a wrong moderator access code is supplied" do
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
+
+      room = Room.new(name: "test", access_code: "123456", moderator_access_code: "abcdef")
+      room.room_settings = "{ }"
+      room.owner = @owner
+      room.save
+
+      post :join, params: { room_uid: room, join_name: "Join Name" }, session: { moderator_access_code: "abcdee" }
+
+      expect(response).to redirect_to room_path(room.uid)
+    end
+
+    it "should redirect to login if a 'empty' moderator access code is supplied and moderator code is not set" do
+      allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
+
+      room = Room.new(name: "test", access_code: "123456")
+      room.room_settings = "{ }"
+      room.owner = @owner
+      room.save
+
+      post :join, params: { room_uid: room, join_name: "Join Name" }, session: { moderator_access_code: nil }
+
+      expect(response).to redirect_to room_path(room.uid)
+    end
+
     it "should join owner as moderator if meeting running" do
       allow_any_instance_of(BigBlueButton::BigBlueButtonApi).to receive(:is_meeting_running?).and_return(true)
 
@@ -671,12 +742,49 @@ describe RoomsController, type: :controller do
       expect(flash[:alert]).to be_nil
     end
 
+    it "should redirect to show with valid moderator_access_code as regular access_code" do
+      allow_any_instance_of(Setting).to receive(:get_value).and_call_original
+      allow_any_instance_of(Setting).to receive(:get_value).with("Moderator Access Codes").and_return("true")
+
+      @room.moderator_access_code = "abcdef"
+      @room.save
+
+      post :login, params: { room_uid: @room.uid, room: { access_code: "abcdef" } }
+
+      expect(response).to redirect_to room_path(@room.uid)
+      expect(flash[:alert]).to be_nil
+      expect(session[:moderator_access_code]).to eq("abcdef")
+    end
+
     it "should redirect to show with and notify user of invalid access code" do
       post :login, params: { room_uid: @room.uid, room: { access_code: "123455" } }
 
       expect(response).to redirect_to room_path(@room.uid)
       expect(flash[:alert]).to eq(I18n.t("room.access_code_required"))
     end
+
+    it "should redirect to show and notify user of invalid moderator access code" do
+      @room.moderator_access_code = "abcdef"
+      @room.save
+
+      post :login, params: { room_uid: @room.uid, room: { moderator_access_code: "abcdee" } }
+
+      expect(response).to redirect_to room_path(@room.uid)
+      expect(flash[:alert]).to eq(I18n.t("room.access_code_required"))
+    end
+
+    it "it should redirect to show with valid moderator access code and disabled moderator codes setting" do
+      allow_any_instance_of(Setting).to receive(:get_value).and_call_original
+      allow_any_instance_of(Setting).to receive(:get_value).with("Moderator Access Codes").and_return("false")
+
+      @room.moderator_access_code = "abcdef"
+      @room.save
+
+      post :join, params: { room_uid: @room, join_name: "Join Name" }, session: { moderator_access_code: "abcdef" }
+
+      expect(response).to redirect_to room_path(@room.uid)
+      expect(flash[:alert]).to eq(I18n.t("room.access_code_required"))
+    end
   end
 
   describe "POST join_specific_room" do