First clone (download and extract the Zip file from GitHub if you must) this repository to ‘C:\core\infrastructure\extendedInterface’ .
Copy the contents of this directory to ‘C:\bin’, add that directory to your system PATH environment variable (actually PATH variable may be optional). Download and copy ‘nircmd.exe’ and ‘nircmdc.exe’ to that directory as well.
Run ‘install_hook.bat’ from this directory. Maybe open a CMD prompt window first, and drag/drop the file into it, so any error messages will as quickly disappear.
Now every time Pimax Experience is called, this batch script will run, starting your programs.
Also consider binding the voice commands ‘construct hands’ , ‘destruct hands’ to 'sc start “LeapService” ’ , etc . This makes it possible to start/stop LeapMotion tracking anytime hand tracking is conflicting with other controls, or is otherwise inconvenient.
Before Pimax Experience, I was basically doing this with SteamVR. The workarounds required were quite a mess by comparison.