Apple ID is greyed out on Macbook Air
I'm trying to log out of my daughter's account on her Macbook Air and log into my account. She is a minor and under my family plan. When I try to log out of her account in System Settings/Apple ID/Sign Out, the Sign Out button is greyed out. Perhaps because she does not have administrative privileges on the Macbook? If that's the case, how do I reboot and log into a different account? Thanks.