About This File
Assuming that you're using the Data Editor software. Instructions here has accompanying screenshots, in respective order. This is how I set, say Slider1, for volume of multiple zones.
1. On the Stage Setting tab/Zone sub-tab of the Parameter Edit screen, enable Slider1 for all the zones that you want to set the volume control for. See Capture01.png
2. On the Stage Setting tab/Common sub-tab of the Parameter Edit screen, set the Target1 to Volume. See Capture02.prg
To set up individual Slider per zone:
1. Set all Target to Volume for Sliders 1 - 4. Set Min = 0 and Max = 127. See Capture04.png
2. In the Stage Settings, enable Slider1 for Zone1 and disable Sliders 2-4. Enable Slider2 for Zone 2 and disable Sliders 1, 3 & 4. So on.
3. Optional: In Stage Settings, Set ALL four zones' volume to 0 so you can flush Sliders1-4 all the way down at the after selecting the Stage Setting..
There is one thing that I would like to highlight - which I think is applicable to all Slider setup. In the 3rd screenshot, Capture03.png, is the Mixer tab which I highlighted the Level (volume) of Zones 1, 2, & 4 which uses Slider1. The default level is 40 in this case. In Capture02.prg, I highlighted the Min and Max values - where the Min is 20.
What this does is that if I set ALL my sliders to lowest (all the way down), the Initial volume of Zones 1, 2 & 3 is 40 when I pick the Stage Setting. And my Slider1 will be at 20. If I just nudge Slider1 up a bit, the value will probably be around 25-30 and this will have an effect of like a "bounce" or "skip" of the volume - in this case from 40 to 25. It's kinda annoying if you're already playing and you adjust it midway through the song. To work around this, set your Slider1 up to 40 or around it before you start playing - then sliding it Up or Down will have the desired effect while playing.
Hope this helps.