Hi Mac, Ray,
Thanks for your help, both. I appreciate the time you took.
I was finally able to make it happen by
a) using the "two period" method after the chord on bar 31; and
b) going to song settings and unclicking the boxes that said "allow rests in middle choruses" and "allow rests in last chorus".

Certainly NOT intuitive, but it works.

Mac, my name is Vince. I'll try to change my profile sometime. The version of BIAB I'm on is Version 2007 for Windows.

Mac, I can't seem to find what you are describing when you write "I just don't know if they have the part that was added at some point on the LH side of the window where the Parts are listed with their dropdown selections. That would be the place to stop instruments for this kind of break. Works fine in my 2010 version."

Definitely not something obvious on the LH side of the window.

Maybe i should upgrade?

If there is another solution, I'm all ears! But I did get it working and am having a ball boppin away at 308 BPM.

Next step is to enter Be-Bop. That has lots of breaks, so it should be quite the exercise in figuring out how to run BIAB.