When you try to log in to the portal, you will be presented with this screen:
Click Use an authenticator. It will then show you a QR code and a text box, like in the image below. Scan the QR code using the Google Authenticator app on your phone. To do this, open the app and click the plus sign in the bottom right corner of the screen. Then click Scan a QR code. When you have scanned the QR code with the app, it will show you a six digit code.
Note: If you want another person to have access to the portal, they will also need this QR code. You can screenshot this screen and then send it to the other person so that they can then use the Google Authenticator app on their phone to scan the QR code. They will need to open the image you send up on a computer so that they can use their phone to scan the QR code. Only send this QR code to people that you trust!
Enter the six-digit code in the text box titled “Enter the provided code and submit”, then click Submit. You will be asked to put the six digit code in again. Each code has a timer, and when the timer runs down, the code will change. This is for security purposes.
Enter the code it is showing at the time and then click Submit. You should now be logged into the portal. Anytime you want to log in, you will need to provide the six digit code that the Google Authenticator app is showing.