My bad! What I meant was that one cannot help the student in the same way as you would help each other in an airliner: The student will not command me to tune frequencies and fill out the operational flightplan; neither will I be handling the com as PNF, as the student is trained for single-pilot operation. The MCC course will take care of that bit. But of course you must help and assist the student in order for him / her to learn something!
But then the question does not specify whether this is about line training og basic flying training either...
However, I still think CRM would be useful for IPs if they are to teach the student the real value of their team and how to use it.