Using Google Authenticator
1. If you are using Google Authenticator, click the Google Authenticator link. This will open your Google Authenticator app.
In your app, you will be presented with a code. Copy that code.
2. Return to your browser and enter the code you copied from your Google Authenticator app. Your two-factor authentication is now enabled.
Other two-factor authentication apps
1. If you are using any other app than Google Authenticator, navigate to 'Enter code manually'.
2. Copy your details presented under step 1 and enter them in your two-factor authentication app. Copy the code from your app, return to your browser, and enter the code under step 2.
Your two-factor authentication is now enabled.