Activating this trainer
If not state otherwise below, press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Editor Options
# Command 
     Prestige
     Command
     HQ Experience

# Selected Unit 
     HP
     XP
     Ammo
     Fuel
     Moves Remaining

Notes
EDITOR OPTIONS

For COMMAND editor options, right click a unit and the values show up.  Edit the values then press TAB to change them.

For SELECTED UNIT editor options, left click a unit and the values show up.  Edit the values then press TAB to change them.