As the platform has changed the buttons arrangement, here is a new video. I will always update here if there is any new improvement around this topic:

If you want go further and inegrate your password with lastpass and duo this article @robrigo
is excellent https://steemit.com/steemit/@robrigo/security-how-to-how-anyone-can-avoid-losing-access-to-their-steemit-account-with-lastpass-and-duo#@lichtblick/re-robrigo-security-how-to-how-anyone-can-avoid-losing-access-to-their-steemit-account-with-lastpass-and-duo-20160724t175237030z