see wiki.freebsd.org/LXQt for instructions on building from source

Binary unofficial packages has been built for 10-amd64 10-i368 11-i386 lxqt-0.12.0

Binary unofficial packages has been built for 11-amd64 and 12-amd64 for lxqt-0.13.0

The 11-amd64 packages are signed with http://lxqt-freebsd.schmitz.computer/poudriere.cert

cd
pkg bootstrap

create the file

/usr/local/etc/pkg/repos/lxqt.conf
with the following contents
lxqt: {
        url: "pkg+http://build.schmitz.computer/packages/${ABI}",
        mirror_type: "srv",
        enabled: yes,
        priority: 100
}

   pkg update
   pkg install lxqt
   pkg install lxqt-l10n (optional - translations) Not yet for 12-amd64
   /usr/local/etc/rc.d/dbus onestart
   add dbus_enable="yes" to /etc/rc.conf

as normal user

   xinit /usr/local/bin/ck-launch-session /usr/local/bin/startlxqt

install optionally gvfs for pcmanfm-qt to work with files over network.