If you want to use a name server that can be used with an externally acquired domain, you need to add the domain to the control panel.
1. Log in to the control panel. Select 「Domain」 from the menu on the left side of the screen and click 「Add new domain」 to proceed to the details of adding domain screen.
2. Check 「Add Your Domain」.
3. Enter the domain obtained externally.
Select a contract to use DNS hosting resources. DNS hosting resources are resources required to use a usable name server.
4. When you have finished adding domains, add DNS records.