Zend certified PHP/Magento developer

how to configure sddm in kubuntu 22.04? Where is config file?

I need to enable numlock on startup. So I’d like to put:

[General]
Numlock=on
into sddm config file, which is nowhere to be found and when creating it in some typical locations(/etc/sddm.conf, /etc/sddm.conf.d) it is ignored. Any idea what is valid location and why info mentioned in man pages does not work?

ubuntu