You must have groups setup in your course. Log in as a teacher and go to your course. Create some groups Create a chat activity In "Common module settings" set Group mode to "Visible groups". Check that "Enter the chat" and "Use more accessible interface" are above the group selector. Click 'Enter the chat' and add a message. Then close the chat. Refresh the page. There should now be a tab "Past sessions" Click on the "Past sessions" tab. Check that the title above the groups selector is "Chat sessions" and not "The name of this activity: Chat sessions". Click on 'List all sessions' Check that the title above the groups selector is "Chat sessions" and not "The name of this activity: Chat sessions". Click 'See this session' Check that there is no heading.