I would rather recommend you test the profile switching option: 1. Change the shortcut from firefox.exe to "firefox.exe" -ProfileManager 2. Uncheck the "use t

I would rather recommend you test the profile switching option: 1. Change the shortcut from firefox.exe to "firefox.exe" -ProfileManager 2. Uncheck the "use the selected profile without asking at startup" 3. Create as many profiles you want. And these will be really containerized, not like the simili container tab feature.