Really doesn't matter what rank these honorary appointments have, but it has to be senior enough to mean something for the work they do and the levels they move at.
Not certain about this but doesn't CV have two children who may well be cadets themselves?
I draw the line at honorary wings, brevets, etc. If the person hasn't done the full course and passed then they should, in my opinion, be worn on the opposite side to denote that they are honorary.