Dave, more info about what steps you tried could be helpful. Without knowing the song or the groove you’re trying to get, I think, based on your clues, I would try alternating measures of four beats and two beats. Use F5 and change the number of beats in certain measures to 2. You also have to change the next measures back to four beats.

Could you post an audio sample or the name of the song and tell us exactly what you’ve tried?

What version of BIAB do you have? Version 2021 for Windows added simulation of 2/2 and 2/4.

I don’t know anything about polkas, but I’m pretty sure BIAB has some. Are they like
Samba and bluegrass, sometimes written in cut time? If so, I think we can help you do what you want.

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