The dish points at one satellite at a time! (unless you have more than one LNBF).
There is no way to scan all the satellites at once, even with the Satwork 3688 it will scan one satellite, then move to the next scan that and move on......
If you have it use USALS then at least (after set up) the dish will KNOW where to move then all you have to do is a blind scan (on each satellite) !