To create your own custom name servers, you first need to log into your Deluxe Hosting client area.
If you do not know how to access your client area, you can find out here.
Click on the Private Nameservers button in the menu on the left-hand side.
You should now be on the Register Nameservers screen.
While this section appears to be all one form, it is actually three separate forms.
In the Register a NameServer Name section, you can enter the name servers name (like ns1 or ns2) and the corresponding IP addresses.
In the Modify a NameServer IP, you can change the set IP address for a previously set custom name server.
You can delete currently set up custom name servers in the Delete a NameServer section.
Unfortunately, there is no list of currently set up name servers.
Be sure to click the corresponding Save Changes button to update the custom name servers.