Take a look at the file jbossmq-destinations-service.xml. That's where you can configure your queues and topics.
Alternatively, you can create another xml file, say using my-queues-service.xml, using jbossmq-destinations-service.xml as an example.
So, inside the file, my-queues-service.xml it contains something like:
<?xml version="1.0" encoding="UTF-8"?>
You can add as many xml files as you like, JBoss will read them and deploy them.