option to combine channel visibility configuration presets

Add option in “channel visibility configuration” window to combine presets.
so if i got Drum,bass,guitars,vocals, visibility presets in a project, i can (possibly by thick box next to visibility preset name) to combine those presets.
for example, thick the Drums and bass visibility presets to view them both (of course with option to create new visibility presets from this if needed)

by the way… this visibility functions are very powerful and helpful to manage projects… thumbs up steiny :wink: