Here is what I’m trying to achieve:
I have an existing page [mysite.com/my-page](https://mysite.com/my-page)
I would like to add another page called new-page but I would like to access this page by visiting [mysite.com/my-page/new-page](https://mysite.com/my-page/new-page). I don’t want to change the structure of the permalinks sitewide. This would be a one-time use thing just for the new-page specifically.
Is this possible and how might I go about it?
You can do this by updating the page attributes – https://make.wordpress.org/support/user-manual/pages/page-attributes/