Thanks for the hint. I’ve been looking for something like that for a long time.
However, it’s not working for me.
I implemented it according to the example. The widget is visible and I can drag and drop the pages but the new order apparently doesn’t get saved to the PinnedChildPages object.
I tried this but it doesn’t work. I installed the extension, then added XWiki.PinnedChildPagesClass object to the page. I then picked all the pages that are children and arranged the way I want and pressed Save & View button. When the page is opened, it still shows the default alphabetical arrangement and not my custom one: