If you wish to use Desktop App host-name branding, then you need to know the following:
One host-name - used for the Desktop App and will be the one used in the links and visible in the browser address bar
- e.g. "epaper.example.com" which needs to be a CNAME alias for "e-pages.pub"
NB. It's customary to use host-names which are subdomains of newspaper website domain.
- e.g. if your site is "www.example.com", the new host-names should be subdomains of "example.com"