How do I set up Google Authenticator for MFA with a new service?

To set up Google Authenticator for MFA with a new service, you'll typically go to the security settings of that service, enable 2-Step Verification or MFA, and then select 'Authenticator app.' You'll be presented with a QR code to scan with the Google Authenticator app on your phone or a secret key to enter manually. Confirm the code generated by the app to link it.