Helpful URLs are being established from the configuration webpage of each and every merchandise, category, or static content webpage. This development web page is simply helpful for a few automatic webpages, and more often than not you will not have to bother with these.   You specify the main URL https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html