How do I manage .tv domains in Plesk?

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My hosting provider (easycgi.com) requires private or custom name servers in order to manage domains in Plesk. The .tv registrar, eNom.tv do not cater for the registration of .tv name servers. So I set the .tv domain up in HSP, which is the only other option I'm aware of. But how do I tie the domain into Plesk so that I can use all the hosting features offered by this panel?