Select the Radio Button next to General chat or Personal chat.
General Chat — Only accessible from the course in which they are created. All users in the course have access to the general chat. You can create multiple chats for the same course, such as “Midterm Review” and “Final Review.”
Personal Chat — Only accessible by users who have been added to the personal chat’s Participant List. When users are added, the chat room displays under personal chats in their list of chats.