Btnx Autostart as root via script or command


I have joyfully managed to configure my mouse with Btnx.
The problem is I have to activate/open it manually after each boot. Even after making it autostart app the bntx windows open at start and I have to insert the password (and click on restart) to make it work ans disappear from the screen.

I have learn that it is possible to make it silently start via a command or a script (used in autostart option),
Alas I am not able to produce such method of starting the app.

I would be grateful if any guru could drop me a couple of lines with a brief explication including such command or script.
Thank you in advance.