Ok, I just got hired through there so maybe I can lend a hand.
1. Go to build a resume. Enter all of your CV via the builder function.
2. Activate your resume in the system. (This takes approx 24 hrs).
3. Once your resume is activated you can self nominate for any position.
If you need to update information on your resume, or to check the status of your self nominations you'll return to (Build a resume view status button) on the first webpage. You then sign in with the username and password and you can then see the status of your self nominations.
Clear as mud? Hope this helps.