1) Login to cPanel

2) Click on "Addon Domain"

3)  Enter your domain name under "New Domain Name" we used our addon domain as an example. You can also tick box Create an FTP account associated with this addon domain in case you would like to create FTP account to upload files using FTP server. In case you using File Manager only to upload file you don't need this option.

4)  Click on "Add Domain" and you will see below screen.

5)  Now you can see added domain as below screen.

6) You need to upload file inside /public_html/smartbuyestore.com.au directory created in File Manager.