Host a new domain?

Hi, I already had a domain host by DH. Now I want to host another different domain. I logon into control panel of my existing account and click “Manage Domains” and “Add a domain or a subdomain to your account”. But it says “Can’t add domain: you don’t have permission to add to”.

What should I do now? PLease help. Thanks.

Wait a minute. Is the new domain you’re adding? Is it registered yet?

no, this just an example name. I registed the domain, a completely different name. I just want both sites to use the same hosting files as my existing domain. Do I need to first change the DNS of my new website to DH?