I assume you are changing the port for security purposes. I suggest just keep the same port and instead use encryption. However, if that is not possible, as mentioned, you can use the "cluster log-forwarding create" command to change port number.
As for the logging question, what you see are the default filters. I suggest, create your own filter and rules, create the destination, and assign the filter to the destination:
event filter create -filter-name <filtername>
event notification destination create -name <destname> -syslog <syslogname or IP>