You can use the New Server command to add a server.
0 (zero),
means that the server and client communicate over the port number
assigned to the Content Manager OnDemand TCP/IP
service. If the Content Manager OnDemand TCP/IP
service is not assigned a port number, the server and client will
attempt to communicate over port number 1445. If the Content Manager OnDemand TCP/IP service is not assigned
a port number and you plan to use a port number other than 1445, then
you must enter a valid port number. The value range is from 0 to 65535.