Display of SDDM user list

In kubuntu 23.10 there is a ‘create user list’ option in the login screen. This adds all users. I have some questions about this.

  1. There does not seem to be a graphical UI to edit this list. I seem to remember some earlier versions of Kubuntu/KDE had a possibility to specify whether a user was listed in the greeter or not. Was this possibility removed at some time?
  2. Where is the created list stored?
  3. Is there a possibility to remove one or more users from this list?