Having a software in place for A/P is the only way to go. You have printouts showing date, day, time, who instigated the whole process, We have one person for the bank and soon to be 4 branches that pays the bills (etc), and one GL account for them to pay through. I can audit her by reviewing her invoices to the GL, verify they were signed off on, there are no outstanding checks, and so on. I think it will make your job much easier if you audit committee will make them follow through.
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In my pill box counting my stash!