Ok. I'm doing the research now, but I'd like some input if possible...

Me: ATP, CFI,CFII,MEI Typed
Student: Nothing. No medical. Nada

I need to train some guys part 91 in a crewed aircraft. I think my question is if a guy has a student pilot certificate can I train him in an airplane requiring two crewmembers or do I need to bring along another qualified pilot as a just in case.

No. I don't want to use a simulator.....unless there is no other choice.

Thanks for any help......and yes this is all above board.... if you really feel a need to know just PM me.