feat(talk): add documentation for features of 21.0

Signed-off-by: Dorra Jaouad <dorra.jaoued7@gmail.com>

user_manual/talk/advanced_features.rst

@@ -97,6 +97,12 @@ If Calendar app is enabled, you can click on an event to view details.
 .. image:: images/events-upcoming.png
     :width: 400px
 
+It is possible to schedule a meeting directly from a conversation. In the dialog, you can set meeting details such as title, date, time and description.
+You can also choose to invite all participants including email guests, or select specific ones.
+
+.. image:: images/talk-schedule-meeting.png
+   :width: 400px
+  
 Breakout rooms
 --------------
 Breakout rooms allow you to divide a Nextcloud Talk call into smaller groups for more focused discussions. The moderator
@@ -240,6 +246,7 @@ By accepting the invite, conversation will appear in the list as any other one.
    :width: 400px
 
 You can use it further to chat with participants from other federated servers, join calls and use other available Talk features.
+
 Chat summary
 ------------
 
@@ -250,5 +257,4 @@ You can generate it by pressing the button that is visible in chat above the fir
    :width: 500px
 
 .. image:: images/chat-summary-text.png
-   :width: 500px
-  
+   :width: 500px

user_manual/talk/talk_basics.rst

@@ -6,8 +6,7 @@ Nextcloud Talk lets you chat and have video calls on your own server.
 
 Chats and calls take place in conversations. You can create any number of conversations. There are several kinds of conversations:
 
-1. **One-on-one conversations.** This is where you have a private chat or call with another Talk user. You can't add other people to this conversation or share it with a link. You start a direct one-on-one chat by looking for another user in the search bar and then clicking their name.
-If a user becomes unavailable for long period and set an out-of-office status, you will find additional information in this conversation, such as provided description, absence date, or their replacement person.
+1. **One-on-one conversations.** This is where you have a private chat or call with another Talk user. You can't add other people to this conversation or share it with a link. You start a direct one-on-one chat by looking for another user in the search bar and then clicking their name. If a user becomes unavailable for long period and set an out-of-office status, you will find additional information in this conversation, such as provided description, absence date, or their replacement person.
 
 
 2. **Group conversations.** Besides the person who created the conversation, a group conversation can have any number of people in it. A group conversation can be shared publicly with a link, so external guest users can join a call. It can also be listed, so other people on your Nextcloud server can join the conversation.
@@ -365,6 +364,8 @@ If video from your camera is also available, other participants will see it in a
 .. image:: images/share-screen-with-camera.png
     :width: 700px
 
+You can zoom in and out of the shared screen with mouse wheel, double click or touchpad gestures.
+
 Changing view in a call
 -----------------------
 
@@ -394,8 +395,28 @@ The table in the CSV file contains the following columns:
 - **Type**: Indicates whether the participant is a registered user or a guest.
 - **Identifier**: Unique identifier for the participant.
 
-
-
+Compact view of conversations list
+----------------------------------
+
+Compact view allows to hide last message preview in the conversation list, providing a more focused interface. 
+You can enable it from the ``Talk settings`` dialog  in ``Appearance`` section.
+
+.. image:: images/talk-compact-view.png
+   :width: 200px
+
+
+Messages search in a conversation
+---------------------------------
+
+In addition to global unified search, you can search for messages within a specific conversation. In the content sidebar of a conversation, click the search icon to open the search tab.
+
+.. image:: images/chat-search-messages.png
+   :width: 500px
+
+You can narrow down your search by using filters such as date range, and sender.
+
+.. image:: images/chat-search-messages-tab.png
+   :width: 500px