Now Click on  the domain that you will be working on.

Now Click on DNS Zone Editor :

Now scroll down and click on Add New :

Now we can start to add the CNAME records for your website:

Example CNAME Record:

Set the Type to CNAME

Set the Record Name to www.yourdomain.com

Set the Record Data to yourdomain.com

This would mean that when you visit http://www.yourdomain.com/ it would redirect you to http://yourdomain.com/

Click on Add and then you are done! You have successfully added the CNAME Records for your website!