Facebook Pages now have a new option called “Create Alias” under “Marketing” within the admin panel.
An “Alias” is a shortened URL for your Facebook Page, making it easier for potential fans to remember, and easier to use in print, radio or TV (facebook.com/CreatingTheFuture as an example)
Create an Alias for your Facebook Page
This new approach differentiates the feature from what most people might consider login credentials (username / password). Also, having this option in the admin panel enables users to be aware that the feature exists.