# How to use multiple compartmentalized Firefox instances simultaneously using profiles
[](https://www.youtube.com/watch?v=Upib_vq_EB8 "How to use multiple compartmentalized Firefox instances simultaneously using profiles - YouTube")
> Heads-up: in the following command, make sure you replace `work` by the name of your profile. If the name includes spaces, please use quotes (example: `-p "Work Profile"`).