I'm not in the clan but I'll help you out. Go onto bungie.net and search for the clan. If you cant find it through searching then look up the founders name on bungie.net and at the bottom it should say the clan they are in and you can click on it to get to the page. Once your on the page be sure that you joined the group first. Once they accept your request to join there should be a button underneath the clan page name that says set as Xbox/playstation clan, click on the console your on and after that you'll get the clan name on your emblem in game.