Hi Sinister Shadow, As Oracle pointed out, while you do have four group members, you only have one clan member. Your group members can designate their clan by going to the group's page and selecting "Set as PlayStation Clan". Keep in mind that in order to join a group's clan, you must have a linked gamertag or PSN ID on your bungie.net profile that has played Destiny, which, looking at your group's roster, may be an issue for one of your group's members. I hope this helps!