Moving page and subpages together

Hi,

I have pages that have subpages, and I would like to move this whole complex at once.
However, only 1 page can be moved.

For example:
If I move a parent page to the top of my list, then I have to search in my long list of pages where their child pages are now, so that I can move them below the already moved parent page.

It would be nice if you can also move pages and their associated subpages together, at once, instead of moving every single page separately.

Thanks.