To install the AlphaSSL Root Certificates, perform the following steps:
Find the CA Bundle box.
Paste the GlobalSign CA Root and AlphaSSL intermediate CA certificates in. It will look like this:
-----BEGIN CERTIFICATE-----
GlobalSign Root CA Certificate
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
AlphaSSL intermediate Certificate
-----END CERTIFICATE-----
Press the "Do it" or "submit" button