if i understand you right are you asking how you can bind 1 key press, lets say "F", to 2 buttons like "F"+"G" or like "1"+"2". if this is kind of what you mean then i think i remember reading on here about an addon that let you do that but i have no clue at all what it is or if it has died out. however, i think HKN can do this. you could also use a /click macro i think to do what you are wanting, unless it involves movement, then idk if it can be done. maybe there is a way to make like move backward or strafe right/left into a macro, don't think there is though.

hope this helped some, if not then sorry i couldn't help ^_^

~YYF