u/tapiq

Got RG Rotate as my first android handheld and I'm still it the confused phase with releatiom with this thing. I'm used to have my home/middle button used as a hotkey for quick saves, FF, rewind etc. On my Miyoo mini this works perfectly. Now with android, the button basically works just as a quit to desktop/launcher function if it's being held for more than half a second. Tried to use to Button Mapper but the long press to desktop always prevails even when remapped through the app.
So is the button usable just for opening retroarch menu? Should I get used to some different hotkey combo just for this device? How do you do it guys?