RetroFE forums

Hi, I actually use coinops distribution with retro fe on my PC, but now I want to move all systems in an arcade cabinet, and I need to use the rocket launcher to play at my emulators cause in retrofe it’s very complicated to configure all the emulators' hotkeys. For example, I need to configure hotkeys which help me to stop the emulation and return to retrofe. But in some emulators like Epsx or retro arch (that I won't use less possible) it’s impossible to do; because I have to use alt+f4.
The problem is that I don’t find any on the internet any tutorial to explain how to set up RL and retro fe. Please Someone can help or share me a tutorial or video that explain all the point for configure all things? I’m in a dead end.
Thanks to those who will answer me