You can do this via the 'SSL/TLS Manager' option.
With the new version of cPanel (11.38+), you no longer need a Dedicated IP to install SSL certificates. This is if you want the SSL Certificate only for domain validation. If you need extra like EV (Extended Validation), then you might be required to have a dedicated ip when you generate the CSR. i Find out what version of cPanel is installed on the server your website is on.
Dedicated IP addresses are no longer required for SSL certificates as long as you are using an OS that supports SNI (CentOS/RHEL 6). You can install a certificate on an account that's assigned a shared IP address assuming your server supports SNI.