A member of the Board shall, for each day (including traveltime) during which the member is attending meetings or conferences of the Board or otherwise engaged in the business of the Board, be compensated at the daily rate of basic pay for level IV of the Executive Schedule. While serving on business of the Board away from their homes or regular places of business, members may be allowed travel expenses, including per diem in lieu of subsistence, as authorized by section
5703 of title
5 for persons in the Government employed intermittently.