The style editor can be overwhelming so I suggest this first...

Make sure that other styles won't work for you. BIAB has thousands of styles some simple and others complex. The jazz that I play requires a very simple bass line. Luckly I found a style that does just that called JAZSIMP. Some of the more complex styles have many patterns while the simpler ones have only a few.

Other options are also available including:

- assign a midi part from a particular style to an individual track
- edit a part to your desire and Freeze the part
- create a hybrid style consisting of parts from different styles

Personally I have had to edit only one style. The only change made was to the ending bars. I'm almost certain you should be able to find a style to do what you want.

Hope it helps
R