To see firefox profile manage, run following command on terminal
/Applications/Firefox.app/Contents/MacOS/firefox-bin --profilemanager
To get the profile in Windows, you need to run following command in "Run" : firefox -p.
1. Run above Command.
2. Click on Create New Profile button.
3. Assign some name to new profile and a location of your choice.
4. Let it complete and done.
5. Click on the profile name to start the browser.
6. Install some addon to that profile and run that profile again.
7. Make sure you do not delete the profile folder.