Hi,
If the URL needs to be changed for different pages, then for each page, the URL property needs to be configured, so that when the user opens the respective page, URLwill be changed according to the page configuration.
Check the below link for reference
https://docs.mendix.com/refguide/page-properties/#url
Hope it helps!!!
A Mendix app is a single page app. Meaning that each page is rendered inside Index.html.
When you need a specific URL. You can configure this as described by bharathi. Which is limited to overview pages and pages w/o context. Pages with a top level data view need the object ID as key. Which is mostly unknown or unsafe. These can be unlocked using the deeplink module