I installed 21.3 XFCE and tried to set the ‘Password: Asked on login’ to disable password prompt.
The coding support for this feature is missing.
I was able to manually make the following modifications to automatically login without the password prompt:
I am not a developer so I do not know if all of these parameters are required. I came up with these parameters by searching other posts relating to the subject autologin lightdm.conf.
The comments in the system supplied configuration file are insufficient documentation for the user to define the minimum required parameters particularly autologin-session.