How do I join the course Chat?
To join the course Chat, the Chat tool must be enabled for the course.
Note: All content in a course chat, including the chat history, can be viewed by anyone in the course.
When you enter the chat room, you immediately join the chat.
At the bottom of the Chat window, there is a text field  where you can enter text. Type your message and hit Return (on a MAC keyboard ) or Enter (on a PC keyboard). You can also click Send.