1. Access your GoDaddy domain manager
2. Select your domain
3. Select the “DNS Zone File” Tab
4. Select “Add Record”
5. Create a new “Nameserver” entry. See capture below. The “host” will be you’re the subdomain you want to point. Use the proper nameserver naming format or GoDaddy will kick an error.
6. If you do not have a FQDN for your nameserver you will want to create an A record pointing to its IP:

THANKS!

I would like to that Glen Kemp who began discussing this topic with me. I thought I should put this up even though GoDaddy clearly supports this procedure in their Support Forums.