Okay this is where the divisions of all of the squads are. You can request to join one on the page that it's at in the topics below this one. Though there are some requirments to joining certain seats. Like for example, if there is no captain for squad 7 and you want to be the captain, then you have to be able to beat everyone else that's already in the division. And also, if one of the lower ranks feels that their character is stronger than yours, they can challenge you and you both fight. If the challenger wins, he or she is given your old rank and you are given theirs.
[Might have more to add later]