Hornet Help

Wondering how people set up hotkeys for simple controllers like an SNES-style controller? Pretty much all guides say to use Select, but some games require the use of Select (e.g. Donkey Kong Country for switching characters, Super Mario World for exiting a level). Is there a way to use a combination of buttons as a hotkey? Or a secondary controller/keyboard for accessing the RetroArch menu from within an emulator?