Special Bench composition and functioning: sets minimum membership, presiding officers, tie referral and quorum for vacancies. Formation of a Special Bench is by the Chairman for a particular case and must include at least five Members; it is presided over by the Chairman or a Vice-Chairman. If Members are equally divided they must state points of difference and refer them to the Chairman for hearing by additional Members, whose majority view decides. If Members cannot function or vacancies occur, the remaining Members may continue provided more than three remain, with the senior-most acting as Presiding Officer.