JDeveloper will create a jboss.xml file for you. The and tags will be created for you as well, so it'll all just work :-)
Seriously, you'll have to fill in all the stuff in the xml file yourself, there is no gui dialogues for jboss deployment options in jdev.
On the bright side, all the other, j2ee-compliant, descriptors (like ejb.xml, web.xml ...) will be created for you. Just point jdev to the jboss deploy dir, and you can hot-deploy your ears directly into jboss. Jboss also seems to run many things quite well just by the defaults, so it's not a big problem that extensive jboss-specific support isn't present in jdev. Basically all you have to configure specifically for jboss is datasources. You don't need a gui for that.