how to put phone on do not disturb except one person?
['Open Settings.', 'Tap “Do Not Disturb”', 'Toggle Do Not Disturb to “on”', 'In the Phone section of the screen, tap “Allow Calls From”', "You can choose to allow calls from Everyone, No One, or the contacts you've selected as Favorites. You can also make an exception for an existing Contacts group."]