Hey @Psnick,
There’s no per-view permission system yet as of now. That said, you could build a Canvas with only the Mixer controls your sound tech needs, then lock navigation on their device so they can’t browse away from it.
You’ll need to be on AbleSet 3.1 Beta.
Once installed, you can do this from the Devices tab → click their device → enable Lock Navigation. You can also force them to that Canvas via OSC: /devices/showPage [device-name] canvas/[canvas-name].
Would that work for your use case?