Sorry if this is a waste of time question, but I'm looking at some modules in Cascades Particle system and I noticed that some modules have a ' + ' next to it, and appear to be grouped together. I can't seem to find the button or option to group one module from one emitter, to another module in a different emitter [sample picture here]. So my question is, "How do? @.@"
Also, what exactly happens or is the point of, grouping modules with one another ?
UPDATE: Figured it out [Face Palms]