Log in to your GoDaddy account and go to the list of your Domains, under My Products:
Click the ‘DNS’ button.
It will take you to the DNS Management page:
In the section that says ‘Nameservers’, you will see your current Nameserver settings. Select ‘Custom’ if not selected already.
Click the ‘Change’ button.
Replace the old Nameservers with the new ones that we sent you:
Click the ‘Save’ button.
Your new website will now appear on your domain. (It can take a few minutes to an hour for the settings to take effect.)