WHAT DOES HOW TO DOWNLOAD CERTIFICATE FROM OPENCLASSROOM MEAN?

I've a DAG surroundings with six servers(2Mailbox+2CAS+2EDGE,Exchange2013 CU21), on that scenario, I just do the procedure in any one mailbox server (one example is MX1SVR) then wait around The brand new certificate to replicated to one other 5 servers for the duration of some hours ? OR i should run the identical approach on one particular CAS ser