1. From the event dashboard, click on "Content" from the Sidebar.

2. Now click on the “Agenda” page, which lists all the sessions added to the event.

3. Now click on the settings icon “⚙️” to display the page where the options can be enabled / disabled.

4. Check on the “Show chat” option to enable session chat. Similarly, uncheck the “Show chat” option to disable session chat.

5. Click "Save" to update the changes.