Only Finance Officer/Bookkeeper will give the payment. In the absence of the FO/BK, the PC or Field Supervisor (FS) can be made to pay the per diem with the proper documentation. FO/BK cash count with PC or FS, put in an envelope, seal and write the amount and signed by FO/BK along the closure edges. The PC/FS will sign a Petty Cash Advance before receiving the envelope.