The order of sub-pages under a page is arbitrary. I would like to change the order of pages that appear in a child pages hierarchy

The order of sub-pages under a page appears arbitrary.

This not only effects the view in the hierarchy but how the pages are exported. In an export PDF, the corresponding sections are out of sequence.

I request being able to edit the order.

In the attached PDF, page 3 shows how I want the sections sequenced. This is very different from the order in the PDF book.