OK, I'm back.
Initially, the answer was no.

I checked allow Multiple Instances in preferences.

After that I can run multiple instances

BiaB has generated the file bbmany.txt in the c:\bb\data\ folder


BIAB & RB2026 Win.(Audiophile), Windows 10 Professional & Windows 11, Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors