The Canvas Chat tool can be used for real-time conversation with course users. Any user in the course can participate in a chat conversation. All content in a course chat can be viewed by anyone in the course. Currently there is no load limit for a course chat, but larger numbers of course users may affect performance.
A user must be actively viewing the chat tool to appear in the chat list. You can open Chat in a new browser window while viewing other areas in Canvas.
Note:
Please see this link for directions on how to use Canvas Chat