If you record each of your lights intensity into a sub and then assign your subs to your fader then that should accomplish what your after.
You can:
[channel] [x] @ [Full] [Enter] [Channel] [x] [intensity] [Record] [Sub] [1] [Enter]
[Sub] [1] [Enter] - then press the too buttons underneath the fader you want to assign the sub to.
If you press the bottom button it should flash intensity of that light
To play with the fade up/down, delay, latching of the sub, Double hit [Sub] you will see them in the column and you can use the softkeys S1-S6 to select which option of the sub you want to change.
Hope that helps.
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