NebulaFX - Modular Effects for Genesis 8-- How do you restrict its application?

RandWulf

Using NebulaFX - Modular Effects for Genesis 8, I think I need to better understand how its application is controled.  There does not seem to be anyway to "turn off" its application to some part of the head no matter what body part I am trying to apply it to -- one of the three (scalp, face, beard) seems to have to be checked no matter what, and when choosing a body part (say the lower chest), it also seems to always apply to the other body parts below it in the hierarchy.