How to choose between Positioner Settings in the Path-Creation

Im currently creating a Paint Path for a complex workpiece on a turntable Positioner.
In the Path-Creation window there is the option to set the Positioner to PA/B, PD/E or PF/G.
However i cant find any recources regarding the effect of these settings.

Could somebody please explain them to me/explain how i utilise them?

Thanks for every answer!