Digital BW, The Print

I'm beginning to explore curve editing of Paul Roark's UT7 profiles and would like to verify 
my understanding of the possibilities. I can see where the green curve controls the cooling 
toner and the blue curve controls the sepia toner. The red curve controls the light and 
dark grey. How does one control the Custom Light Black and the Ebony Black? Also is there 
a way in which you can control the input from the cool toner and the light cool toner 
separately? Is there a way in which you can control the input of the Dark Grey and Light 
Grey independantly?
I will appreciate any guidance.

Howard