The organization must be provided with office space. The organization, at the expense of the fund, shall provide all necessary equipment, supplies, stationery, and furniture, and all clerical and other help necessary to carry out the provisions of this title. The employees of the organization are entitled to receive from the fund for each mile [1.61 kilometers] actually and necessarily traveled in the performance of official duty by motor vehicle the same rates in the same manner as other state officials. If travel is by a motor vehicle owned by the state, or by any department or political subdivision thereof, no allowance may be paid for the mileage. Vouchers for travel and other administrative expenses must bear the approval of the organization and the office of management and budget before payment is made therefor. Travel and other administrative expense payments must be made by warrant-check prepared by the office of management and budget drawn upon the state treasurer against the fund. Expenditures made under this section, however, must be within the limitations designated by the legislative assembly in appropriation measures adopted from time to time.