Add grouping to instruments to be adjusted and/or changed

In my case, I am writing a marching band piece, and it would be a great time saver if I could group all the mallet instruments, marching percussion, horns, winds, etc, so that I could possibly mute, solo, or adjust them all without having to click 10 instruments. It would also be nice to either have subgroups, or have instruments be able to be part of many groups, so that I could have a group of, say, winds, as well as one of flutes.