Samsung UN55FH6200FXZA - Manual (Page 387)

asking about invitation type. If
you were invited by phone number,
please select Invite Code . If you were
invited by Samsung account, please
select Samsung Account .
3. If joining by
Samsung Account , a
list of invitations from your family
groups will be displayed. Select
Accept to join. You can select Deny
if you don't want to join the inviting
group.