1. Go to your Control Panel and click List Domains
2. Manage the domain that you want to add addon or subdomains
3. Click add domain
For Addon Domain:
For Subdomain:
5. If you already updated DNS you can select SSL otherwise only select DKIM support
6. Click Create
7. Successfully Installed
8. You can list and see
Congratulations! You have successfully created addon or subdomain!