I have used this 'bars per line' option on several hundred pieces of sheet music. It can be cumbersome, but once you have your correct settings, it will stick, regardless of the key, lyrics or octave.

It's not easy to edit however, as you have to re-enter all the numbers if you want to change them (maybe this is fixed in 2014). So if you have for instance, 4,5,5,3,4,4,4,2 the option box will show 4,5,3,4,2 and you will have to retype the whole line to make it 4,5,5,3,5,3,2. BIAB only shows the significant digits, not the whole string. It's clumsy but workable.

BIAB for Windows Version 2019 (643)
Windows 10 (1909)