If you wish to secure a sub-domain(s) along with your main domain, you must purchase a Wildcard Certificate.
Fortunately, these can be installed via AutoInstall SSL™, and the process is mostly the same.
Once you have purchased the Wildcard Certificate and you receive your Token, you can then login to your hosting control panel (i.e. cPanel, Plesk etc.), click on the AutoInstall SSL™ icon, and insert the Token.
Once you do this, the Domain/webspace bar will appear, and under it will be a button that reads, “Retrieve Sub-Domains”.
Once you click on the “Retrieve Sub-Domain” button, a list of all sub-domains associated with that domain will appear. You then have the option to select all of their subdomains or pick and choose which ones you wish to secure.
After the sub-domains have been selected, the rest of the AutoInstall SSL™ process is exactly the same.
