You can temporarily block a child user if they still have available time, but you wish them to get off of their screens.
To do so, follow these steps on your device:
1. Click on the vertical ellipsis (⋮) for the user you wish to block temporarily.
2. Click on "Block User."
3. Choose how long you wish this user to be blocked: 30 mins, 60 mins, 2 hours, or the rest of the day.
4. You can also set a custom date and time until when you wish the user to be blocked.