Immediately after being weighed in, a greyhound shall be placed in the lockout kennel under the supervision of the paddock judge. Only the paddock judge, commission veterinarian, kennel master, clerk of scales, leadout, racing judge, or representative of the Commission may enter the lockout kennel. A kennel owner or trainer may accompany a greyhound into the lockout kennel under the direct supervision of a racing judge or a designee of the racing judges.