How do I see additional information about a group conversation?
Group members can see the following information: group name, date of creation, number of members, list of members’ profiles and the group admin.
To see additional information about a group conversation:-
For Android:
1. Tap on the Chat menu icon 
on top right side corner.
2. Choose the group conversation that you want change its name.
3. Tap on the settings 
menu button on the top right corner.
4. Tap on Group Chat Info.
5. You will see Group info, Group chat name, Members, etc...
For IOS:
1. Tap on the Chat menu icon on top right side corner.
2. Choose the group conversation that you want change its name.
3. Tap on the settings menu button on the top right corner.
4. Tap on Group Chat Info.
5. You will see Group info, Group chat name, Members, etc...