For example, if I let someone use my laptop, I don't want sms or iMessage messages showing up on the screen. Is there a quick toggle/keyboard shortcut rather than having to open iMessage and disable...? Thanks.
There is nothing you can do that they can't undo if they are using your account. The "correct" way to loan your computer to someone is to either create an account for them and delete it when they're gone, or let them log into the Guest account.There's no app to download that works as a quick toggle in the menu bar, etc.?