What are the benefits of moving a page on a different parent

The page is to be moved with a different parent page.

For example:

moving a page sample
 

Why you would move a page in another parent page

Let's say a user mistakenly assigned the page to the wrong parent page, or a change of mind that the selected page must be moved to another parent page, then this document will help you on how to implement and transfer the page to another.