In order to park a domain on top of an addon domain, please do the following:
1.Click addon domains
2.Type the domain name you wish to park on top of the addon domain in the field to the right of New Domain Name
3.You will see your current addon domain and user listed under Current Addon Domains
4Take the user name which is located inside of the parentheses to the right of your current addon domain, and input the user name in the field to the right of “User name/directory/sub domain Name
5.Insert a password in the password field.
6.Click Add Domain!
You have now just parked a domain onto of an addon domain.