Only the Primary Parent can invite, revoke and invite or remove someone from a Family Group.
To revoke an invitation or remove someone from a Family Group:
Log in to your parent profile.
Tap on your child’s profile.
Tap Profile.
Go to the Additional Parents section.
You should see any invitations you have sent to other parents.
Tap Remove to delete the invitation.
Family Group invitations expire if they’re not accepted in time. You’ll need to revoke an expired invitation before sending a new one.