Here you can select 2-factor authentication for the profile.
An email must be configured for the user. Furthermore, the notification service (SMTP server) must be activated.
Google Authenticator
This requires the GA app on a smartphone. A QR code for setting up the account in the app is displayed in the user area.
Radius
This requires the Radius server to be configured.
SMS
To do this, an SMS service must be configured and a phone number must be available.
FIDO2
To do this, the FIDO2 parameters must be configured.