Depends on how the author has coded stuff quite a bit. Generally though you're just messing with the combo parameters in the cmd. Find the "Air attacks" and add in a few more triggers. Say for example Air Heavy Punch is Z and it takes you to state 620. To allow for more combo potential into this attack the changestate will look like this
[State -1]
type = changestate
value = 620
triggerall = statetype = A && command = "z"
trigger1 = ctrl = 1
trigger2 = stateno = 600 && movecontact
trigger3 = stateno = 610 && movecontact
trigger4 = stateno = 630 && movecontact
trigger5 = stateno = 640 && movecontact
trigger6 = stateno = 650 && movecontact
Everything after trigger1 is a combo condition. Tells you that if you're in state whatever and have hit, you can trigger heavy punch without needing ctrl set to 1. That's the simple method, defining super jump is very dependant on how the creator coded it though.