Another Reddit newbie with a question!

Hey I'm new to Snapzu, and I've already started making myself at home! I created my own tribe /t/metalgearsolid and have posted a few things already!

Here's my question. Across the top of the page there are buttons to access general tribes, but half of them I'm not a part of an the new ones that I joined are not showing up to click! So how do I customize the top row of tribes? Is there a way to do this?