There are several possible approaches.

One is to use what BIAB calls a Tag. Find this in Edit, Song Form, Settings.

Another is to Edit, Song Form, Unfold to one long chorus. Then you can make the song whatever you want.

Another is to use the Tools icon, Form, Song Form Dialog.

Look these up in the Help and try each to see what makes sense to you.

Me? From your description, I would use a Tag.
BIAB 2021 Win Audiophile & 2020 Mac UltraPak. Software: Studio One 5, Adobe Audition CC, Notion 6; Win 10 64 Pro. Hardware: custom i7 16 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Adam sub & monitors.