To create an addon domain name, kindly follow the steps below;
You will need to change the name server by changing it to the nameserver of the domain that has the hosting.
After the nameservers have been changed, you can create the addon domain by simply Logging into your cPanel and click Addon Domains, under Domains. There are three fields cPanel asks for when creating an Addon Domain.
1. New Domain Name: Enter the new domain example.com.ng, but remember to leave out the http or www in the name.
2. Username/directory/subdomain Name: This will be the folder cPanel creates in your public_html folder. Please ensure the name you provide doesn't already exist as a folder in public_html, but cPanel will automatically suggest the name and we advise you stick with the suggestion.
3. Password: Fill in any password you want here. This password is used for an FTP account which is automatically created by cPanel. Your new domain is now successfully added. You can upload the website files to the specific addon folder which was created in the public_html folder.