The Login Screen Behavior settings page allows setting automatic user login and some other system things.
Now, in Plasma 6.0.0 … 6.0.4, it is located in the System Settings → Colors & Themes → Login Screen (SDDM) → Behaviour… (a button at the top of the page)
I don’t think this is an appropriate place for it since automatic login has nothing to do with colors and themes.
Also, the ‘Behavior…’ button is easy to overlook, and it’s name isn’t very informative.
So it’s pretty hard to find automatic login settings now.
I think, the page could be placed into the Security and Privacy category or maybe System category near the Users page.
