Preflight procedures talks about a "Ram Air Control Knob".   Where is it located exactly?

I don't think that detail is modelled. Must be the way of allowing the cabin to get pressurised by alternative means.

 

Emergency air control (”RAM AIR” control knob), located under R.H. area instrument panel facing control wheel, enables outside air to enter the cabin through a valve. In NORMAL position, the valve is closed and the control is locked. To open emergency ventilation valve, press on locking knob and move control rearwards.