How do I leave a family?
It’s simple to leave a family!
If you’re the only person in the family, just click on My Families and click the ellipses 
next to the name. Then click Delete Family. That’s it!
If you no longer want to be part of a family with other members, first make sure someone other than yourself is an administrator. Then go to My Families, click the ellipses next to the family name, and click Leave Family. That’s it, you’re all set!