To change the URL of your Landing Page, you need to access the Dashboard of the landing page that you want to customize
Once there, below the landing page’s name, you’ll see a URL. From there you can also add any custom domain you've configured for this landing page in the event that you have one, or more than one.
Finally, change the name of your page by clicking next to the url, type the new name of your landing page in the space provided. Once you've done that, complete the action by clicking the green check mark right next to it and then republishing the landing page..
With these actions completed you’ll then have a published landing page under a new name.