Thanks Fred for the insight.
However, if I were to follow the workflow on
http://starizona.com/acb/ccd/softwar..._ngc253pm.aspx , I guess I still have to process individual groups first (with Maxim auto calibrates each image..no need to worry on that one) , and then color combine them?
Looking through the options in Maxim, I guess if I want to do that automatically, I need to create a script ?
I already have the master calibration files done before so, I just 'check' the Auto-Calibrate option when Stacking.
Regards