You can surely install SSL certificates for multiple domains on our hosting servers due to the SNI technology available on them. SNI technology allows having multiple certificates installed on the same IP address. You can check more details about SNI in this article.
If you have hosting with us, you can have unlimited number of certificates installed in your cPanel.
If you would like to secure several domains, there are a few options possible.
*If you need to secure all subdomains of one domain, i.e., www.yourdomain.com, login.yourdomain.com, checkout.yourdomain.com and all others, you can get a wildcard certificate. Such type of certificates should be also installed for every subdomain you need to get secured. Wildcard certificates can be found here.
If you already have a dedicated IP address assigned to your hosting account, it is still possible to install multiple certificates in it. This dedicated IP address will be displayed for all certificates installed within your hosting account. Basically, only one certificate will be installed on the dedicated IP address, while other certificates will use SNI option.