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.

Click on the "Edit" option in the desired session on the session card. 

You will now see all details about the session, click on the “Questions” tab on the left-hand side under session details. 

Now click the “Project Responses” button to project approved questions onto a big screen. 

The approved questions will be displayed as shown in the below screenshot:

How to project approved questions onto a big screen?