“Addon Domains,” “Aliases,” and “Subdomains” were deprecated in cPanel version 100 and have been removed in version 106. The functionality of those interfaces has been consolidated to the “Domains” interface.
The following articles provide the instructions for creating addon domains, aliases, and subdomains.
How to create an Addon Domain : https://support.cpanel.net/hc/en-us/articles/360053267473-How-to-create-an-Addon-Domain
How to create an alias (formerly known as parked domain) : https://support.cpanel.net/hc/en-us/articles/360055638573-How-to-create-an-alias-formerly-known-as-parked-domain-
How to create a subdomain : https://support.cpanel.net/hc/en-us/articles/360052780313-How-to-create-a-subdomain
