Chat rooms are grouped as General (course) chats or Personal chats. You can only access General chats from the appropriate course. You can access Personal chats from anywhere in Learning Environment.
Do one of the following:
Type a message in the text box at the bottom of the chat room, and press Enter on your keyboard or click Send.
If you think new messages are not appearing on your screen fast enough, click Refresh at the top of the chat. This option appears when you select New Messages in Settings.
The Participants pane displays a list of users currently signed in to a chat room.
Note You can change back to see all messages, which restores all messages for that session, even if they were not visible while New Messages was selected.
Links:
[1] http://staging.docs.d2l/en/taxonomy/term/3