How do I create subpages for urls?

 https://spectrum.chat/gatsby-js/general/how-do-i-create-subpages-for-urls~d9511651-a91f-4a0f-8c13-4e5c6e186350

For example, If I have a page anesthesiologists, and I want to have a page with the url with "anesthesiologists/more-time", how do I preface the link? These are all files in the pages folder.

Put them inside a folder anesthesiologists