How to setup your private name servers? (VPS & Dedicated Servers)
Login to WHM
Under the section Server Configuration click Basic cPanel/WHM Setup
Next to Primary Nameserver enter your private name server (ex ns1.yourdomain.com)
Next to Secondary Nameserver enter your second private name server (ex. ns2.yourdomain.com)
Then click Add an A entry for this nameserver for both name servers.
Your name servers are now configured in WHM and ready to use.
Note: You must also create the name servers at your domain register. Please contact them for a guide