2FA on FortiMail in server mode via FortiAuthenticator + Password Change

Hi,

does anyone know a way to authenticate user via 2FA on the FortiMail in server mode with allowing the user to change his password in the webmail settings? 2FA is working in general via RADIUS and LDAP by using "password+token" as "password" on the login page but the users are not able to change their passwords while being logged on to the webmail...

The users are setup as local users on a FortiAuthenticator with FortiTokens attached (isolated environment, no AD or similar).

Thanks in advance!