Edit on web
Click the Settings icon on your community page
Click Details > Edit your community details
Click Save
Extra cool things you can personalize:
What your members are called, referred to as alias
What your ambassadors are called, referred to as moderator alias
Social links that pin for all members to see
Edit on mobile
Tap your Profile on the bottom left tab
Go to Settings on the top right
Click Edit Community > On the upper-right corner tap Edit
Save
Want to make your community private?
Private communities require people to apply to join. Keep a lookout for new applications!
Tap your Profile on the bottom left tab
Go to Settings on the top right
Click Edit Community > On the upper-right corner tap Edit
Enable the Make this fam private
Click Save