Ok. I was thinking of using the radio to control other groups, even to the point of controlling them as though they were your own.
My idea is to use the radio (0-0) to bring a list of groups you can control.
This is where my knowledge fails. Can you allow another list to be displayed when the choice in this list is made?
If so I was thinking you could use a large script to access all the normal commands you can give to your own group and give "All" orders to the group, or be able to order the individual units within the group. Of course this would only be possible for groups of up to nine if you wanted to include a select all.
So is it possible to bring up a new list of selectable items after you select one from the previous list, and continue to do so as many times as you want?