To apply for a new SSL certificate, follow the steps below

Generate a Certificate Signing Request

Navigate to Repository | Certificates | Certificate Signing Request"

Click the "Generate CSR" button

Fill in the CSR form, click Save

Submit the Certificate Signing Request 

Now, you need to submit the Certificate Signing Request (CSR) to a Certificate Authority, e.g. GoDaddy, to be signed. 

Click the context menu of the newly created Certificate Signing Request

Select "View" from the context menu

Copy the CSR text and submit it to your CA

Download the Certificate from CA

Once your CA has signed your CSR, it will issue you a certificate.

Download the SSL certificate. Commonly, the certificate is delivered in a CRT file, e.g. "dualshield.deepnetid.com.crt"

Also, a CA bundle file will be provided. The CA bundle file includes the certificate of the root CA and the intermediate CA, e.g. "dualshield.deepnetid.com.ca-bundle" 

Complete the Certificate Signing Request

Finally, you need to complete the Certificate Signing Request using the certificate that you downloaded from the CA

Click the context menu of the Certificate Signing Request

Select "Complete Certificate Request"

Select the CA Bundle file, and the certificate CRT file

Click Save

The certificate will be saved in the "Server Certificate" list

Please note that this does not automatically update your web certificate.  If you wish to do that then...