Usually you can't... Retail usually can't unless the broker screwed up your order and they they try to do a t or z trade. But if you have an unusual order (very odd size or other instruction) which you brokered w/ an MM, then you could (assuming the contract asked them to do it). Else it's damn near impossible.
But... TAs have been known to execute AH but that's some kind of arrangement w/ a MM which I don't understand too well.