Admin to limited account issue.
I have a 2009 iMac running High Sierra 10.13.6. I have changed an account on my iMac from standard to admin and now wish to change it back to standard but the box I need to untick is greyed out. I've tried via the account I want to change and the original admin account but same story there. Any ideas would be great cause I'm tearing my hair out here! lol
iMac, macOS 10.13