(a) The Director of the Bureau of Legislative Research shall be the disbursing officer of the funds appropriated for paying per diem, expenses, and mileage to members of the General Assembly attending regular and special meetings and other committee-related activities of the interim committees of the General Assembly as provided by law, unless specific provisions are made to the contrary.
(b) Payments for per diem and mileage for attendance by members of the Senate and House of Representatives at meetings of interim committees shall be upon written claims filed therefor.