Vacancies Any member appointed to fill a vacancy occurring before the expiration of the term for which the member’s predecessor was appointed shall be appointed only for the remainder of that term. A member may serve after the expiration of that member’s term until a successor has taken office. A vacancy in the Advisory Board shall be filled in the manner in which the original appointment was made. (c) Basic Pay (1) Rates of pay Except as provided in paragraph (2), Advisory Board Members and staff, including the Chairperson, Vice Chairperson, and Director, shall each be paid at a rate determined by the Secretary. (2) Prohibition of compensation of federal employees Members of the Advisory Board who are full-time officers or employees of the United States may not receive additional pay, allowances, or benefits by reason of their service on the Advisory Board. (d) Travel expenses Each member 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 Fifty percent plus one members of the Advisory Board shall constitute a quorum but a lesser number may hold hearings. (f) Chairperson