Turning on 2FA for your users, login to smartadmin, and browse to users. Select the users you would like to enable 2FA for, then under the "Password Actions" dropdown, you can enable or disable 2FA.

You can see if a user has 2FA enabled by looking at the list of users and looking for the shield logo as follows:

You can also toggle 2FA on from an individuals User Edit screen, by simply setting the "Two Factor Authentication" field to "Enabled".

If a user has lost their 2FA code on their device, you can reset their 2FA device by selecting "Reset 2FA Secret" from the edit user page:

 

We will be expanding this functionality in the near future.