This video is a quick tutorial for how to change a Style in the middle of a Band-in-a-Box song, then change it back. It was filmed using the Windows version of Band-in-a-Box, but the steps shown are applicable for the Mac version as well.
Here are some other useful tutorials that go more in depth into the Bar Settings dialogue and the StylePicker window.
Bar Settings Overview:
https://youtu.be/1EoF1BFZSzY
Using the StylePicker:
https://youtu.be/g9Ovdul7bi0
This video was created using Band-in-a-Box® Version 2022. www.pgmusic.com