I noticed in a recent Prodigy project with System Builder that turning off the theatre zone turns off all sources even when other PAMP zones are still on. I thought that the global "sources off" commands were only initiated when every zone in the system was turned off. I mean, it only makes sense this way...

What's the easiest way to get this to work in system builder? If I were to use RTI terms, can I set "flags" when rooms are turned on then automatically turn off the source components when the flags are cleared?

I got around this temporarily by creating an "All Off" button on the home page to turn off every room and device in the system but it would be nice to turn off all sources if the user just happens to turn off rooms one after the other.