Analog and digital mixers allow for controlling multiple channels as if they were one.  These controls are commonly known as subgroups...but not really...maybe in the generic sense...but then you might say VCA's if that's what your board uses...because subgroups are different. [Sigh]  There are several methods in which channels can be grouped together.  And each works differently, of course, 'cause some days things just have to be complicated.  Maybe I'm just in one of those moods... Why [keep reading]