Each state agency shall fill out the budget forms provided for in Section 6-3-18 N.M. Stat. Ann. in the manner prescribed by the state budget division. Each state agency, in completing the budget forms, shall include information for all divisions, subdivisions and offices of the agency. Related agencies, upon approval of the state budget division, may join in submitting one set of budget forms. Completed budget forms shall be returned to the state budget division not later than September 1 in each year.