No1P
You say you are a PPL - would I be correct in thinking you've only recently
obtained your License?
Do you think a Flying Club/School would be happy allowing one of their aircraft to be flown
by someone who had never flown that make before
(even if they knew you were sitting next to the pilot in order to "advise")?
Two, low hour, PPL holders in the same aircraft with the PIC totally
unfamiliar with it, and hence having to rely on advice from his passenger,
sounds like a recipe for disaster and, I would suggest, is also illegal, given
that before flight it is the captains responsibility to ensure the intended
flight can be conducted safely.
You've posted a few times on "Can I do this?". If you're just shooting the breeze then fine;
but if you are actually contemplating doing these things I suggest you also ask yourself
"Should I do this? Is it a good idea?"