1. Log in to your registrar account
The registrar is where you originally purchased the domain. If you don't remember who your registrar is, you can use whois.net to find out.
2. Locate the Control Panel or Domain Manager of your domain in your registrar account.
The control panel allows you to change the DNS records from the default ones provided by the registrar.
Different registrars may have different control panel layouts and other names for it as well. You might find it under 'DNS Manager' or 'Domain Manager".
3. In your registrar's Control Panel, Add a CNAME record-