I haven�t rally made any style from scratch. (Just a few for fun - but nothing worth saving.) But I have made a lot of tweaking of existing styles - mainly from other arranger companies.
The most time for this I spend in micro- mode. But I sometimes use other edit modes, for instance when I edit drumtrack of Ketron styles. Then I can delete or transpose that weird sounding note in all variations at the same time, etc.
If you want to create a track from scratch, the micro mode is very difficult to use. It�s better to do a real time recording of the track, and afterwords edit it in micro or any other mode.
I�m not sure this is what you asked, but this was the answer you got

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Did you by the way download the styles in one of my previous postings? There are some really hot ones!
Michael