If either of you are Professional Pilots.... get back in the books
Whilst on the ground, you can get the HW/TW value, but no cross track element (since Trk = Hdg). It will require an ASI reading (v INS GS), so will only "click" in with some forward airspeed, hence why it appears on TO, but only as a 12/6 o'clock display...
As you get airborne, and drift comes in, then you get the full W/V display (INS GS/Trk vector v Hdg/TAS vector)...
HTH
NoD
