I am connected to my PixHawk and I am unable to a find a number of parameters under “Advance Paramters”, or “Full Paramter List”?
My firmware is Ardu Plane.
paramters I am looking for are such as;
ArduPilot doc shows all of them. What am I do wrong “or” am I searching at the wrong place? 
Why are you looking parameters for Copter if you using Plane ?
https://ardupilot.org/plane/index.html
Eosbandi
I think maybe I am confusing two things in my head.
Working on a Hex VTOL with a push motor. What would be a frame type selection should be initially?
Sorry, first time trying a VTOL and trying to do a deeper dive.
And why OSD parameters not available inside ArduPlane?
It is a plane with Q_ parameters set for HEXA.
AFAIK you see OSD parameters if you use a FC with built in OSD, other boards the OSD functionality is not compiled in.
