Note that if you select the new user account in the side column, the box next to Enable parental controls is checked. To disable parental controls for this account at any time, simply uncheck the box.

Alternatively, you can set up a guest account with parental controls enabled. The below steps show you how to turn on parental controls for an existing user account.

If you are unable to change or cannot change the User Account Control settings on Windows 11/10, then this post may able to help you. You may need to edit the Registry.