CERTIFICATE COURSE OPTIONS

I've a DAG ecosystem with 6 servers(2Mailbox+2CAS+2EDGE,Exchange2013 CU21), on that case, I just do the method in any one mailbox server (for example MX1SVR) and afterwards wait the new certificate to replicated to one other 5 servers during some hours ? OR i should run a similar process on just one CAS server and 1 EDGE server?sechs Wochen, bis ih