Originally Posted by SUroot
You could set them as "Allowed contacts" as per the screenshot.
I have added my family contacts to this but it's kinda useless because I do not sleep with the phone in the room. I think this stems from the years of much publicised ill effects of having electronic items in the vicinity. In the case of en emergency, family members are expected to call the house.
But I imagine the combination of settings is great for users in an office environment when you need to quickly tone down the phone's sometimes hyperactive notifications (social, email, and what not) during a meeting.