If you want to be a Division Leader check the Leader's Division to see what spots are open.
Gym Leader Information
Only Divisions that do not have a leader may be applied for.
In order to be a Division Leader, your application be accepted by the appropriate League Organizer.
If there is more than one application for a Division, the best will be chosen by the League Organizer.
Your application must include your AIM name, your anticipated lineup.
As a Leader you may use your prize berries in a Division battle, but not outside a Division battle.
Division Leaders must own at least 3 of their Gym Pokemon.
Division Leaders must have a lineup of 6 Pokemon, which can include rented Pokemon. If a Division Leader owns 4 of their Division Pokemon, he/she can have a lineup of 8 Pokemon, if he/she owns 6, then 10, and if he/she owns 8, then 12.
Legendary Pokemon are not allowed in a Division lineup.
Division Leaders may change their lineup and are responsible for updating their lineup and other info in the proper thread. Not fully evolved Pokemon must be approved by the league organizer before the being used in the Division.
Pokemon that are rented by Division Leaders must be kept in their stats. They may be taught moves and their Dream World ability like any other Pokemon they own, but rental Pokemon may only be used while the Division Leader is defending his/her Division.
If a Division Leader acquires an owned version of a rental Pokemon, he/she may transfer all taught moves and its Dream World ability to the owned version when changing the rental Pokemon in his/her lineup to the owned version.
If you remove a rental Pokemon any other way, any taught moves and its Dream World ability are lost.
The Hidden Power type on a rental Pokemon must remain the same, even if you remove it from your lineup and add it again later and teach it a new Hidden Power. Therefore, you must note what Hidden Power type any of your previous rentals had.
If a rental Pokemon that knows Hidden Power has its moves transferred to an owned version, the owned version must get its own Hidden Power type rolled.
A Division Leader must keep all information regarding his/her Division in his/her stats. This includes his/her lineup, successful challengers of the Division, and the Division's win and loss record. This information must be kept, even after a Division Leader no longer owns the Division.
A Division Leader is considered to have his/her own Division Ribbon, but only while he/she owns it.
Division Leaders are able to set the rules of their gym battles, as long as the rule is a legal rule. However, the battle must be higher than 2 VS. 2. If the battle mode involves sending Pokemon and moves in the chat/thread instead of privately, the leader can decide who sends his/her Pokemon first. Some leaders have specific rules they must use.
There may be periodic roll calls for Division Leaders. If a Division Leader does not respond in time, he/she may lose his/her Division.
If a person feels as though a Division Leader is doing a bad job as a Division Leader, and that person feels as though he/she is able to defend that Division better, he/she may ask the League Organizer of that Division Leader to challenge that Division Leader for his/her position. The League Organizer has the right to not allow this sort of challenge if he/she feels the Division Leader is doing fine or if the challenger is not good enough. If this sort of challenge is allowed, the League Organizer decides the specifics of the challenge, which should involve both players using only that Attribute's Pokemon.