Topic: "Grouped" signal processing
We've all had installs that use the same speakers in many different rooms, like a ballroom, classrooms, or casino. In each room, the first three bands of PEQ are the same, and only one or two filter bands are needed to tweak the speaker to the room itself.
So here are a handful of Signal Processors that allow you to do exactly that, plus make changes to the compressor/limiter and band-pass filters on a global basis.
There is also a crossover set that might be of interest.
It is all open, so you can see how it is done. There is no magic here, it just looks that way.