If you want to use Google Authenticator to sign-off issues you can create a new ESF field with Google Auth Validator Field type
To generate a secure code for Google Authenticator and send it to the user E-mail you should click generate secret link
You should get the following E-mail message to your E-mail box
You need to set up Google Authenticator on your mobile phone and use the secret code from the E-mail message to register a new account
https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2&hl=en&gl=US
After you did it you can get token generated against time generator by Google Authenticator to sign-off issues using ESF Google Auth Validator Field
