To begin the development of a new JBoss project, it needs to be registered in the project management system - JIRA. To do that you need to contact a JIRA Administrator (http://jira.jboss.com/jira/secure/Administrators.jspa).
Once the project is created, you will need to create a version label for the first (or next) production release. Under this release there will be several "blocking" tasks such as requirements gathering, coding, documentation, training material and QA. As a best practice issues should be only closed by their original reporter.
In addition to the production release there you will need to create versions for the intermediate releases at the end of each iteration. See the project named "README 1st - JBoss Project Template" for a starting point.