Had a few false starts, mostly relating to user/group administration in Sylve (I think these are mostly/only used for Samba, which I'm not using).I'm on 15.0-RELEASE-p9, using the quarterly repository and pkgbase, so I used 'pkg install sylve' to install.I changed admin password in config.json, ran 'sysrc sylve_enable="YES"' and 'service sylve start'. PAM authentication is enabled by default. Initialization went smoothly, and ends with a reboot.To my surprise, I now had another user in the SDDM login screen, called "User &". It turned out to be the Sylve admin user.I added the following to sddm.conf:[Users]HideUsers=adminHideShells=/sbin/nologinGone! Sylve still works