certificate

Hi,
I have 1 RHUA, 1 HAProxy and 2 CDS (CDS01 and CDS02). I use gluster as the storage.
I have certificate for both cds' (cds01.crt and cds2.crt from DigiCert; also DigiCertCA.crt) but I am not really sure where to save them at the server.
and my lb-hostname is cds.
Can anyone help me to figure out about the certificate?

Thanks