Generally no payments can be made to a merchant without written approval by the director. A proper explanation for expenses should be noted on the form in the space provided and the invoice or supporting documentation attached. Committee expenditures may not be used in place of the College of Charleston's Purchase Order system to contract with outside vendors for any other goods or services. As noted above, sufficient documentation must accompany any Expenditure Authorization to verify it meets the above guidelines. Examples of documentation are: itemized invoices, letters, and order forms. Purchases made before director approval will not be supported by the program. Requests must be submitted at least one week (5 academic days) before the purchase is required to be considered for director approval.