Is there an easy way to create a turnaround for only the first two choruses of a 3 chorus song?

For instance, I would like the last 2 measures of my first two choruses to be Bb6 (4 beats) C-7 (2 beats) F7 (2 beats). For the last chorus I would like the last 2 measures to be Bb6 (8 beats).

So C-7 F7 is the turnaround but I would like to replace that with Bb6 for the last chorus.

I guess I could enter all the chords in a linear fashion with a single chorus using repeats but I was hoping to avoid doing that.

Band-in-a-Box 2011
Windows 10