It looks like you may be (at least partially) out of luck. You can have 99 systems, but only 10 Quick Keys per system. There are two work arounds that I can think of: 1 Split your system into two systems, both assigned to different System Quick Keys. You can then select the 1/2 system and turn the Group Quick Keys on or off. (You might be able to assign both Systems to the same System Quick Key, but I'm not sure if that would work for you.) The other idea is to assign more than one group to a Group Quick Key. If you listen to the same groups at the same place or time this could be an easy answer.
Mark