Light Group at Multiple Brightness Levels

I would like to use one Light Group to control multiple lights, but instead of all the individual lights ramping up from 0 to 100, I would like the following lights to be at a maximum brightness when the Light Group is at 100%:

Light 1 max @ 80%
Light 2 max @ 60%
Light 3 max @ 30%

So when the Light Group is at 50%, Light 1, 2 and 3 should be at 40%, 30% and 15% respectively.

Is this possible to do while still maintaining the control to come from just the 1 “light”?

It depends what you mean by:

If all you want to control is turning them all off or all on (to the selected brightness states) then use scenes instead of a group. Create a scene for off and a scene for your wanted brightness levels.

I was hoping to be able to move the slider on the light group and be able to move the sliders of all the other individual lights at that lowered factored rate.