I wasn't sure what link to submit, but this video makes a good explanation: <a href="https://mozilla.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=d2328a37-8dad-4658-8c78-b26c0170fbb1" rel="nofollow">https://mozilla.hosted.panopto.com/Panopto/Pages/Viewer.aspx...</a><p>Works very similarly to Chrome profiles, I think.