Some lilies naturally multiply while others, don't. Sometimes it has to do with the climate and the soil, etc. I've not grow Conca d'Or myself, so I can't say.
At any rate, you can always use a method called scaling. These will get you started:
https://www.bdlilies.com/propf...
https://www.bdlilies.com/whatd...
https://www.google.com/url?sa=...
There are videos out there too, but be careful. Most of them are very generic, and ont done by poeple who know what they are doing. Stay away from any "all purpose" how to site, whether it is for anything or just plants.
