Hotel Accounting [repack] | Plus & Free Here is a quick hotel accounting hack: "You have three moving parts: The PMS (rooms), The POS (food/bar), and The Back Office (payroll)." hotel accounting I have included a and a visual description so you can design the graphic easily. Here is a quick hotel accounting hack: "You This keeps your GOP (Gross Operating Profit) honest and your ownership happy. The POS (food/bar)