As a recovery contact, you can help a trusted friend or family member regain access to their account if they're ever locked out. Learn what to do if they need your help and how to accept or decline the request.| Apple Support
An account recovery contact can help make sure that you always have access to your account, even if you forgot your Apple Account password or device passcode. Learn how to set up a recovery contact on your iPhone, iPad, or Mac.| Apple Support
You can start a new family group and invite people to join, or you can join someone else's family group.| Apple Support