; and (2) includes a military department, as defined under section 102 of such title, the United States Postal Service, and the Postal Regulatory Commission. (b) Unless authorized in accordance with law or regulations to use such time for other purposes, an employee of an agency shall use official time in an honest effort to perform official duties. An employee not under a leave system, including a Presidential appointee exempted under 5 U.S.C. 6301(2) , has an obligation to expend an honest effort and a reasonable proportion of such employee's time in the performance of official duties. 720. Notwithstanding 31 U.S.C. 1346 and section 708 of this Act, funds made available for the current fiscal year by this or any other Act to any department or agency, which is a member of the Federal Accounting Standards Advisory Board (FASAB), shall be available to finance an appropriate share of FASAB administrative costs. 721. Notwithstanding 31 U.S.C. 1346 and section 708 of this Act, the head of each Executive department and agency is hereby authorized to transfer to or reimburse General Services Administration, Government-wide Policy with the approval of the Director of the Office of Management and Budget, funds made available for the current fiscal year by this or any other Act, including rebates from charge card and other contracts: Provided , That these funds shall be administered by the Administrator of General Services to support Government-wide and other multi-agency financial, information technology, procurement, and other management innovations, initiatives, and activities, including improving coordination and reducing duplication, as approved by the Director of the Office of Management and Budget, in consultation with the appropriate interagency and multi-agency groups designated by the Director (including the President's Management Council for overall management improvement initiatives, the Chief Financial Officers Council for financial management initiatives, the Chief Information Officers Council for