TransX How to effectively plan multi-planet hopping backwards?

[Kolodez]

Good evening! On TransX, it is no problem to choose the "sling direct" plan to go from planet A to planet B. Therefore, one can adjust the "departure" date, the "departure" angle and the "departure" velocity and then try to find a good combination of those, such that the vessel would just arrive at the planet B at some "arrival" date, "arrival" velocity etc., which are computed by TransX. However, sometimes it is more useful to do this backwards, i.e. set an arrival date, arrival angle and arrival velocity (for planet B) and get the necessary departure parameters (for planet A) computed. Is there a way to do this? Thank you!