The Purchasing Agent shall prepare an annual purchasing schedule consistent with the users' needs and the efficient functioning of the business office.
f.
Signature of Purchasing Agent.
3.
Purchase orders shall be prenumbered (imprinted) and prepared in sets of five copies each to be used as follows:
a. Original (white) to vendor. a. Whenever possible, a purchase order number should be given to the vendor. All delivery requests should be expedited through central stores. d. Central stores will notify business office, in writing, of merchandise returned and provide purchase order number for reference.