help add autogrouping for selection unit pls

[Twice]

hello, what i mean autogrouping for selection unit is when i play siren, i only making group just once then if i summon it again.. it still there for illusion unit but not all selection or other unit..
ex: 1st mirror for "5" hotkey, 2nd for "6" and so on.. i divide them to some keys..
it would be great if we have this config.. thanks a lot