Ken, that's worth stating the obvious, that one may simply type the enharmonic equivalent chord into the chordsheet. You can have F#Maj7 and GbMaj7 in the same bar.

I was making the assumption that the OP was looking for some BIAB command or process.


BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.