Create a new url for an existing XS Application

Hi ,

         I Have a query regarding accessing the existing XS Application with new URL.

          Scenario:

          hostname : abc

          alias name of hostname : efg

          port : 8000

          I am able to access my XS application with the url : https://abc:8000/Projectname

          But I want to access it with:  https://efg:8000/Projectname

          what configuration changes I should do to achieve my requirement?

Thanks

Rahul Anand