Hello,
By default the changeset.xml points at the defaultPackage of guvnor. In Guvnor you can create as many packages as you want and you can add processes to those packages and build them normally, without touching the changeset.xml. The changeset.xml is basically used by the gwt-console-server (therefore the jbpm-console as well) in order to look for/use the resources specified in the changeset.xml, hence if you dont specify the new or modified packages in the changeset.xml files the jbpm-console will never look for those packages and you will not see any processes.