Select the Chat Room tool from the Tool Menu of your site.
When you click Chat Room, you will enter the default room (as specified by the site leader).
In the text box at the bottom of the window, type your message, and then click Add message or hit the Enter key on your keyboard.
Note: No one can see your message until you click Add message or hit Enter, but once you do, only an instructor or a participant with special permission can delete your message.
To discard a message that you haven't sent yet, click Clear.
To delete a Chat Room message that you have sufficient permission to delete, click the trash can icon (Delete this Message) next to the posting.
Note: If you don't see a trash can icon, you don't have permission to delete the message.
You will be prompted to confirm the deletion. If you are sure you want to delete the message, click the Delete button to confirm.
Tip: To permanently delete all messages from a chat room, click Options, and then click Clear History. Click Delete to confirm.