Create alias for hotkey (iTerm2)

I'd like to create an alias for the hotkey I defined to open up iTerm2.

Right now I use fn-F1 to open up and hide the window - but I'd like to map it to F13 as well because of I can access this key as long as I have my wired keyboard attached.

Is there any way to create an alias which just triggers/ emulates a hotkey?