Going to Sitemap -> Folder view, I can only rearrange the top level of folders. I can't find a way to rearrange pages inside them :( Can anyone help point me to the right direction please?

Basicly, I'm trying to arrange my pages in the sitemap, so that they'll show up in the auto-nav the way I want them to. I can't sort them by date nor chronological order, didn't plan for that from the start.

Any help appreciate.