If you have not yet created a Certificate Signing Request (CSR) and ordered your certificate, see
SSL Certificate CSR Creation | ConsoleOne.
How to install your SSL Digital Certificate
If you received a .p7b file in an email from DigiCert or are able to log in to your account to download a certificate bundle (.p7b) file, go ahead and skip forward to step 6.
Otherwise, steps 1-5 will walk you through the process of creating a .p7b file from standard format SSL certificate files.
Download the Primary, Intermediate, and Root certificate files from your DigiCert account.
Import the root and intermediate certificates into Internet Explorer
On a Windows Computer, double-click each certificate file and click the 'Install Certificate...' button to start the Certificate import wizard. The TrustedRoot.crt certificate must go into your Trusted Root Certification Authorities store, and the Intermediate certificate (DigiCertCA.crt) must go into your Intermediate Certification Authorities store.
Double-click the Primary SSL Certificate (your_domain_name.crt) for your domain. Go to the details tab, and click on Copy to File.
Choose "Cryptographic Message Syntax Standard - PKCS #7 Certificates (.P7B)" and check the "Include all certificates in the certification path if possible" box.
Give it a name, and finish. This will create a single bundled certificate from the three individual certificates.
Go to ConsoleOne and then to the certificate that created the CSR.
In the Public Key Certificate Tab, choose Import, select "No Trusted Root Certificate available". Click Next, and then import the Server Certificate you created.
After you have validated the certificate, it is ready for use.