Friendly URLs are being established during the configuration webpage of each solution, category, or static material page. This creation website page is only useful for some automatic pages, and most of the time you will not have to bother with these. Usually, we recommend not to the touch these fields https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html