Board Thread:General Discussion/@comment-25523075-20150630180847/@comment-9380534-20150630184658

Rappy explained this in the other thread:

Staff are paid employees of Wikia - if they break the rules, they are going to be fired. And yes, they do have to send a message. It's probably an email, or online application they fill out for the Staff position they desire.

For the "Tower" user you linked, if they wanted to become a Staff member, they would have to submit an application, go through the interview process, and then they could be hired.