OK. First, although notes of Cb, B#, Fb and E# are currently supported in BIAB, chords of those names are not, so you are not going to be able to get that Cb chord no matter what.

As for the chord spellings, that can sometimes be accomplished by working with the key signature in BIAB. In the example given, did you first make the key signature of the song E before entering the song?

Regardless, you can also try this: change the key signature to something with flats, like Eb, but say No when it asks if you want to transpose. Then change it again to E and again say No to transpose. Often, the chords will 'flip' to the more appropriate enharmonic spelling. [However, in my experience, this method is not foolproof.]

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.