Alright, so basically I have built the new hall underground, south of spawn. If you go through the main entrance, and descend, you will get to the basement. There are alcoves carved into the walls. Each player gets their own alcove, and can develop their own teleporters (I recommend building two way ports) in a linear fashion. In the interim, the signature for the Ministry (the edifice which encompasses the new hall) is Stone brick N/S, and Wood planks E/W.