If its PIC, be sure it is legit. If it is turbine, you need a Type Rating, or at the very least some record of formal training (KingAir, etc).
(There are some differences in what companies will consider PIC- Part1 vs 61)
If its dual received, get a signature.
If its SIC be darned sure that 2 crewmembers are REQUIRED for operation.
They want total Multi. But do yourself a favor and keep it all above board. Monkeying with your logbook may seem like a good way to cut a corner, but it will probably bite you in the end.