To adjust the 10 point IRE:
Go to Method and select 10 point IRE.
Under that will be an IRE point option, from 10 to 100 (10, 20, 30, etc.)
For each selection you must adjust the Red, Green, and Blue values located just below.
For example, you choose the 10IRE and adjust the RGB values. Then you switch to 20IRE and adjust the RGB. Then 30IRE and adjust the RGB. And so on...
You can use the values I had posted some time ago.
10 (-3,8,-16) = 10IRE selected, Red -3, Green +8, Blue -16)
I don't know how else to explain it.