WebHost Manager enables you to change a wide variety of DNS information at any time.
WARNING: Do not edit a DNS zone unless you know what you are doing.
1) To access the DNS Functions Menu, click on DNS Functions, on the main screen of your WebHost Manager interface.
2) Click on Edit a DNS Zone.
3) Enter the DNS zone that you want to edit in the Zone to Edit field and click on Do it.
4) Change nameservers to your private nameservers.
5) Add New Entires Below this line (please check images how to do)
6) Alter the DNS fields as you require, and click on Save when you have finished.