No funds may be made available for expenditure by any budget unit, other than the units of the legislative branch and the judicial branch, until such budget unit has filed a request for allotment of appropriations with the Office of Planning and Budget and the request for allotment has been approved by the Governor. Requests for allotment of appropriations for ordinary, recurring expenses shall be filed not later than five days before the beginning of each month. Requests for allotment of appropriations for extraordinary expenses or capital outlay may be filed at such times as the Office of Planning and Budget may prescribe. The request for allotment shall be presented on forms prescribed by the Office of Planning and Budget and shall be supplemented by such information as the Office of Planning and Budget may require.