2-factor authentication can be selected here for the profile.

e-mail

An e-mail 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

The Radius server must be configured for this.

SMS

To do this, an SMS service must be configured and a telephone number must be available