Turning on 2-Factor Authentication in 1Password to use on website

Thank you for getting back to me! I did use that link before submitting a question here, I should have said that, however when I had tried searching on Search 2fa.directory, the site doesn't show up, but I know it uses 1Password. It's ARQ Backup, It's just not showing up as being an option to use in the 1Password application itself. You know how 1Password will show you at the top of your login that you can turn on 2 factor on? it's not showing that. I hope I'm being a little clearer what's going on.