travel expenses, including per diem in lieu of subsistence, in accordance with applicable provisions under subchapter 1 of chapter 57 of title 5, United States Code. (6) Quorum A majority of members of the Commission shall constitute a quorum but a lesser number may hold hearings. (7) Chairperson The Comptroller shall designate a member of the Commission as the Chairperson of the Commission at the time of appointment, for the initial term of that member. (8) Meetings The Commission shall meet at the call of the Chairperson. (d) Powers of Commission (1) In general Subject to such review as the Comptroller General deems necessary to assure the efficient administration of the Commission, the Commission may— (A) employ and fix the compensation of an Executive Director (subject to the approval of the Comptroller General) and such other personnel as may be necessary to carry out its duties