Make a sale (POS)
Who can use this: access pos (or access pos v2 for POS (New) if your shop uses it).
Pay the bill
Who can use this: access pos. Cheque / voucher methods need their own permissions when those modules are on.
Hold bill
Who can use this: suspend sale, plus access pos.
Cash register
Who can use this: open register, view cash register, pay in, pay out, or close register.
POS shortcuts
Who can use this: access pos.