Sikorsky S-76 helicopter

At what point does a helicopter need two pilots? Or can they fly with one pilot all the time. I don’t know anything about helicopters. So there must be an very intelligent helicopter pilot that can explain this to me. If you’re around KANE or KSTP, I’ll buy you a cup of coffee. :smiley:
Thank-you
I was looking at Sikorsky S-76 helicopter,if that needs two pilots or not.

I stand corrected. You would need three pilots to read the three separate threads you have started on this subject!

Not really. It’s not a 1-to-1 relationship pilots versus posts. The relationship exponential by powers of two. So three posts means a helicopter needs 6 pilots (1 x 2 x 3).