When a "Youth" is desiring a combatant to aid in honing his/her skills, he/she will challenge another Youth to a duel, and they will often fight brutally - sometimes to the point of injury or even death. Often if a Nephew/Niece bests a Son/Daughter he/she will recognizably rise in rank - but, a Youth isn't worthy enough to challenge a Brother/Sister or the Father/Mother, so, a Son/Daughter can never become a Brother/Sister through the Fight Club.
The Youthful Office of Supervision is intended for that particular Youth given the honorary rank of Supervisor. It is this Youth (recognized as the best among his/her kin) who keeps the Youth quarters in order, and has the jurisdiction to tell other members of the Youth quarter to "take it outside, or else!" This Youth is often chosen by the Father/Mother and thus, favored by the higher-ups of the Dark Side Scourge. The Supervisor remains in office until he/she rises up in rank, or is killed.