In this guide you will learn how to manage your instances. If you haven't added your instance yet, follow this guide
Open Defguard.
Go to Instances in the app menu.
Press & Hold the Connect button next to the location you want to update.
When the popup appears, look for the option Select Traffic Routing.
You will see this:
Choose method and click Connect
Press & Hold Connect button next to location name and wait until popup shows.
Click Select MFA Method.