Universe Override


I am looking to have a universe override another universe either using Netron Or Onyx. I would prefer Netron. How I would like it to work goes like this. I want to take Art-Net Universes 2-3 and have those as my “base” universe. I would then like to have Art-Net Universes 0-1 override 2-3 when any value is above zero on those universes.

What would be the best way to do this?