You can't use the gui configuration management tool since its a core install. Use powershell instead. Use the following example below that I found on mdsn's blog by Dan Benediktson. Just replace 3344 with whatever port number you want to use. FYI, this is for the "ipall" config setting.
$MachineObject.getsmoobject($tcp.urn.Value + "/IPAddress[@Name='IPAll']").IPAddressProperties[1].Value = "3344"
$tcp.alter()
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