How to use one weight layer as a mask for the other Below is an image of a subdivided plane with 2 different weight layers and 2 different particle systems.

I am curious if there is a fast way to take the weight painting information for my red objects and use it as a mask for my green objects weight information? 


The result would make it so the red objects seemingly cut through the green objects.


Thank you so much everyone!!
You can either use the Vertex Weight Edit modifier or, more simply in this case, the Vertex Weight Mix modifier:



Which will let you subtract the band group from the circle group:



Ensure 'Use Modifier Stack' is checked in the particle system..