Good morning. There are several ways to accomplish getting an exact rhythm at any particular bar. Which way to do it depends on what you have to work with as well as the media format of the track.

If you're using a RealTrack Rhythm instrument, 2023 BIAB has the Playable RealTracks feature. This feature allows users to customize RealTracks by adding their own notes while keeping the original instrument's sound. In your case, for the one bar exact rhythm, you would input midi notes of the exact phrase for the PRT to sound out. Every RealTrack can use the PRT feature.

If that exact rhythm pattern is played elsewhere in your project for that instrument, a bar can be copy and pasted to the necessary bar.

You can use a midi VSTi and Sample Tank if you're using a midi track.

You, or you can have someone record and play the part and use it on the track.

Another method is if the rhythm can be played by the RealTrack instrument, 2023 also has the Partial Regeneration feature so highlight the bar changing to the exact rhythm and use the Partial Regeneration feature until it plays the right rhythm.

If multiple instruments are needed to change rhythm for that bar, just repeat one of the methods for each track.

This is some ways to key it in using BIAB. Tracks can also be exported and edited in a DAW.

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.