Firefox profiles are not a user exposed feature. If you want to use multiple profiles at the same time then you have to use the command line to manually start m

Firefox profiles are not a user exposed feature. If you want to use multiple profiles at the same time then you have to use the command line to manually start multiple Firefox processes. I hate to admit it but Chromes profiles are far superior for me to keep different “Personas” separate. They run in the same process but in separate windows. By far the easiest way keep for example work and personal browsing separated. I give the profiles a different theme so that their windows are easily recognized.