In the event dashboard, click on "content" from the sidebar.

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

Now click on the settings icon “⚙️” 

Check on the “Show questions” option to enable the Q&A section for the session. Similarly, you can uncheck the “Show questions” option to disable the Q&A section for the session.

Once the necessary changes are made, click on "Save"

How to enable and disable the Q & A section for your sessions?