Step 1: Download your issued certificate

You can download your certificate or copies of your certificate from email, Copy and paste your issued Certificate into a text editor and save it for example as : yourdomain.txt

Step 2: Install your issued certificate

1. Click on the Install an SSL Certificate and Setup the Domain link in the SSL/TLS menu.
2. Enter the domain, user name, and IP address for the certificate in the Domain, User, and IP Address fields.
3. Click on the fetch button to paste the .key and .crt files for the domain into the available display spaces, if they are currently on your server. Otherwise, copy and paste the .key and .crt files into the available display areas.
   Note: If you generated the certificate using WebHost Manager, the certificate files will be available.
4. Replace the existing .crt file with yourdomain.txt file

WebHost Manager is the control center of the CPanel / WebHost Manager package. It is used to set up and manage accounts. Use WHM to install your issued certificate.

Once you have received an SSL certificate, you can install the certificate using WebHost Manager. You need both the certificate and key files to install the certificate.

For more information have a look at the WHM documentation: http://www.cpanel.net/docs/whm/