The teaching video is here(Old type v2.11MC,the same operatings nearly):
https://v.qq.com/x/page/a3266a8mabm.html

The type of bullfrog now is more like the BMPT72 which can assist some main battle tanks to work better.

Such as this one:

Operatings:

AG1 Turret cannons ready (Pitch,Roll,Trim control this aim,VTOL control the fuse of the FABclose,and its maxRange will have two miles away.Better to using the mouse to joystick enabled mode for control the Pitch and Roll aim)
AG5 Turret pitch and roll controlling on

AG2 Camera-2 manual control missile launch (Pitch and Roll control,have nuke or normal firepower adjustment)
AG3 Camera-3 manual control missile launch (Pitch and Roll control,have nuke or normal firepower adjustment)

AG4 Manual stealth and drop the amphibious function (And become the forward gear on ground after into stealth more)
AG7 Reverse gear(Ground only)
AG8 Forward gaer (De-Act4 only)
LandingGear Parking break

The different between bullfrog v1.0 and v2.0

The older version link:
https://www.simpleplanes.com/a/Y6h0Z9/V-U-RA3-Bullfrog-v1-35

Development from this:
https://www.simpleplanes.com/a/O1JTVG/V-U-RA3-Bullfrog-v2-1WCNP

Enjoy and fun!