Until now, Ametys allowed you to exclude a page (and its sub-pages) from referencing, from the sitemap view.
To exclude an entire site, it was necessary to select the pages one by one and perform the "Out of listing" action available in the banner (this action was not available for the "Site map" parent node).
Since this latest version, it is possible to select the "Sitemap" node and click on the "Exclude from referencing" action. This action excludes the entire selected site from referencing.
For more details on referencing, see this page.