E38 LS7 min Air/Idle

Question when trying to setup min airflow which which column to setup for as it shows 1-6 gear/ park/neutral/reverse? Also how far up in the rpm's do you typically setup for?
I am having a pain trying to get a consistent smooth idle, it starts off decent and gets rough then goes back decent.
And I am getting a slight surge when cursing around 45-50kmh I have been adjusting the min air rate which has made a huge improvement.
The only mod to the car is a 227/243 .649/.660 115 lsa cam,
Is there any way to add in control over TP% in the scan tool? that would make setting this up really much easier.