Lock submissions from the Edit view
1
Select the slide
Select the slide you want to lock submissions on.
2
Open the Content tab
Open the Content tab.
3
Check Lock submissions
Check the box Lock submissions. This disables submissions for that question. You can reopen them again later.
Lock submissions from the Presentation view
1
Click Lock submissions
While presenting, on the slide you want to stop submissions on, click the Lock submissions icon.
2
Reopen submissions
To enable submissions again, press the S key or click the Open submission icon.