problem with apple ID when dividing users
I got a new macair recently and set it up so both myself and my boyfriend can sign in as users.
It is my computer but when I go to download updates it asks for an apple ID and the email comes up in grey - there is no option to change from his ID to mine even when I'm signed into my user area.
How can I set it so it allows a choice of users or sets me as the administrator?
Thanks!