Well what a good question here

. In the Expert Software at least it is not possible, since anything after the first shot will be considered follow-through. Audio detection is still active and will detect such noises as decoking or unloading but will not take them for actual shot. There is no support either for any audio signals, although many smartphone apps will do it.
Of course the Standard's 150s should be ok. Maybe for the 20s you could try a fast move up/down out of the target, this would probably be 1/2 to 3/4 second and would be an interesting training exercise. But clearly impossible for the 10s.
Curious to read Scatt's answer!
Did you try with the 3s/7s part of Women's 25m Pistol with rotating targets? It should be fine too since the pistol is lowered far enough to get the target out of the sensor's field of view.