Light bar with 4 LED PARS

We have a unit that has one DMX channel and 4 separate LED Par cans, you can control each lamp separately with RGB on Ch4-6, Ch7-9, Ch10-12 and Ch13-15.

How do I patch this fixture, I created a fixture with these RGB channel controls but it only controls all the lamps together, and I want to address them with their own sliders (I.e. a RED1,2,3,4 GREEN1,2,3,4 and BLUE 1,2,3,4)

How do I do this?

Just assign each par to a different group. I do something similar with the pars on my Gigbar move.