Oh dear Tandem, you'll be telling us they are just passengers next
Oh dear silsoe, you'll be telling us they hold a JAA licence on the EC135 next!
If you want a second pair of eyes on the flying sh1t, employ a second pilot. Otherwise accept that one person soaks up all the pressure!
One or the other!
Even hosties aren't passengers. They even do CRM! EVERYBODY knows that don't they??