From part 1, we have opened the Zone Menu for the selected zone. You may elect to create another zone, or edit the selected zone. In either case, you will end up on the zone editing screen
Hopefully it's obvious, that you can edit the name and description of the zone. Recall our planned layout in the first post. We will have a zone in the front, and 2 in the rear seats. We could give those zones meaningful names on this screen. Like "Front", "L-Rear", "R-Rear".
Selecting the 'AudioDevice' field will bring up a list of valid audio devices from which you can choose the audio device to be associated with this zone. 'Default Device' is the host OS's default audio device.
Setting focus to the 'SubZones' field will bring up a list of currently configured zones that you can attach to this zone. This is where some neat magic happens. You can define an 'All' zone (which OM does by default) which essentially means that any media action you take while using the 'All' zone will be duplicated on all zones. Likewise, you can set a zone 'Rear' which (in our scenario) would have sub-zones 'L-Rear' and 'R-Rear', and a movie can be played to both these zones.
NOTE: You do NOT need to specify audio devices for a zone that will be using sub-zones.
So how do we do this you ask?
In the media player screen (music shown), you notice the tab that says "front"....., click that and a zone selection pop-up will be presented to allow you to select your target zone
So now if you select "Rear", you can play your media to the two rear zones (L-Rear and R-Rear via the "virtual" zone we created called Rear).
Note that this "play to" function can also me set via the media bar (Media tab at bottom left corner).