Welcoming URLs are to get set in the configuration web site of each products, class, or static content website page. This generation page is just practical for some automatic web pages, and usually you will not have to bother with these. By default, PrestaShop's deep URLs (that is, unique webpages https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html