Musocity is on the right track. There's several ways to do this in BIAB without needing the Audio Edit Window or external DAW.

Here's one method that works really well. See the attached screenshots.

The first screenshot below is the nine guitars Musocity has loaded in his demonstration. The second screenshot is those same nine guitars loaded onto a single Mixer Track like he also mentioned. They are programmed to play sequentially every two bars. So, every third bar, the guitar 3 Track will change to another of the nine similar guitars. BIAB's algorithm knows these instrument changes will be occurring and will select appropriate phrases to end the first instrument and appropriate phase for the beginning instrument. Note in the Medley Maker Window, the user can volume balance the instruments as well as pan each of them if desired. Also notice the dropdown window that allows the user to select when and how the nine guitars rotate in the song.

You could also also change between the nine guitars using the same track by converting the song into a MultiStyle or a third way would be to do it on a bar by bar basis using the Bar Settings Window.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Quinn.jpg (98.41 KB, 104 downloads)
Nine guitars on a single track.jpg (300.38 KB, 106 downloads)
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.