; and (2) shall receive travel expenses, including per diem in lieu of subsistence, in accordance with applicable provisions under subchapter I of chapter 57 of title 5, United States Code. (e) Quorum Eight members of the Commission shall constitute a quorum, but a lesser number may hold hearings. (f) Meetings The Commission shall meet at the call of the Chairman or a majority of its members. 5. Staff (a) In general With the approval of the Commission, the Chairman may appoint and fix the pay of not more than six individuals for the staff of the Commission. Such individuals may be appointed without regard to the provisions of title 5, United States Code, governing appointments in the competitive service, and may be paid without regard to the provisions of chapter 51 and subchapter III of chapter 53 of that title relating to classification and General Schedule pay rates, except that an individual so appointed may not receive pay in excess of the maximum annual rate of basic pay payable for grade GS–15 of the General Schedule under section 5332 of title 5, United States Code. (b) Experts and consultants With the approval of the Commission, the Chairman may procure temporary and intermittent services in the manner prescribed in section 3109(b) of title 5, United States Code, but at rates for individuals not to exceed the daily equivalent of the maximum annual rate of basic pay payable for grade GS–15 of the General Schedule under section 5332 of title 5, United States Code. (c) Staff of Federal agencies Upon request of the Commission, the head of any Federal department or agency may detail, on a reimbursable basis, any of the personnel of that department or agency to the Commission to assist it in carrying out its duties under this Act. 6. Powers of Commission (a) Hearings The Commission may, for the purpose of carrying out this Act, hold hearings, sit and act at times and places, take testimony, and receive evidence as the Commission considers appropriate. (b) Subpoena power (1) In general The Commission may issue