If you want to become Hokage and earn rights that other members cannot have just give atleast a chapter of your fanfic/story by posting it. The director (Rock Lee) will choose to approve your story. If he does approve you then you will become Hokage.
Dont be shy we wont judge your works everyone has their unique kind of way of writing.
Steps:
1) go to Naruto forum
2) click new topic
3) put your username and depending what number was the last persons
Like kamicolo(CABRIDGE) fanfic #3
4)wait for approval