unable to set up guest user
I am running macOS 10.15.7 on a MacBook Pro 16-inch, 2019.
I open System Preferences > Users & Groups.
'Guest User' is visible, but greyed out and not click-able.
I unlock the lock at bottom left of window.
'Guest User' is then available. When I click on that, the box next to "Allow guests to log in to this computer" is already checked.
I click and lock the lock. 'Guest User' again becomes greyed out.
I log off of my machine.
The log in screen comes up, but Guest User is not available.
I restart, just to make sure. But again when it comes back up, Guest User is not available.
How can I allow my guest to login via as 'Guest User'
Any help is appreciated.
MacBook Pro 16″, macOS 10.15