Roleplay ranks y can join as and earn through activity and trust
Amein and mod etc ranks must be earned, and unless there's auditions, only an admin could announce that you were a mod or something along those lines.
Post ranks;
You will join as a newbie, and until around 30 posts you will become a Jr. member. After that I do not know but that's basically he it goes, the more posts you have, the higher rank you'll get. ^^