The basics, from tournament selection process:
At no point is a member present for conversation about or vote on a ballot including a team the individual represents as an athletics director or commissioner. Also, a committee member may not vote and shall not be present during any discussion regarding the selection or seeding of a team in which an immediate family member is a student-athlete on the team, is a member of the coaching staff, or is a senior athletics administrator of the institution. An athletics director or commissioner is permitted to answer general factual questions-- e.g., injury dates, player availability -- about teams in the conference the individual represents.
--> (my note) I guess people don't have to believe that it's followed, but if that's the case the entire process is a house of cards.