Well, if you want to use AHK, make sure you have it set up correctly (as in, have all the keys/combination of keys you want to send to your clones actually up n running), check your keybinds (in your wow menu), and just put a macro (could be as easy as /follow party1 or something) at the spot you want.
Same goes for assist. Easiest macro would be /assist party1

Not sure what exactly you need help with, the macro or how to set up ahk?