Yes, the default setup is configured using the "defaultPackage" on Guvnor. You can configure the console to take other packages / resources into account by updating the changeSet.xml configuration file:
https://github.com/krisv/jbpm/blob/master/jbpm-gwt/jbpm-gwt-console/src/main/resources/ChangeSet.xml
Create your own version of this file and put it in the META-INF/classes directory inside the gwt-console-server.war. That should override the default configuration with your preferences.
Kris