I'm sorry but I'm not understanding you very well.
On our system you can configure a supported domain. It's the domain name where you will need support. ex. jomsocial.com.
Also, you can add install domains. It's where you will use the extension and could be a subdomain or subdirectory and a different domain. ex. jomsocial.com, community.jomsocial.com, jomsocial.com/community, ijoomla.com
So, you can use the extension in all your personal domains but you will receive support in a single domain name.
