The ISKCON Sannyasa Ministry serves all of ISKCON but in particular those members who have taken to the sacred order of renunciation; sannyasa.
In this site you can find a list of ISKCON Sannyasis, what the qualifications and responsibilities of a sannyasi are and how to become one.
The ISKCON Sannyasa Minister is Prahladananda Swami.
http://www.iskcon.net.au/sannyasaministry/