DLSitemap is a snippet to build XML site map for search engines and robots. It's much faster than sitemap and can define priority and change frequency by the time of the last document modification.
The snippet itself is a wrapper for DocLister to run it with predefined parameters (see
assets/snippets/DocLister/config/core/sitemap.json), so you can use all DocLister parameters to filter docs, change order and so on. But
prepare parameter is filled with DLSitemap, so use
AfterPrepare parameters instead of it.
If you want to control priority and change frequency manually, then you have to create TV-parameters named
sitemap_changefreq (these names can be changed with
changefreq parameters). If document has no these TV-parameters, then priority and change frequency are defined automatically.