Darwin Streaming Server

my Company is wanting to offer Video Streaming Services, such as live video streams (using Wirecast and Quicktime Broadcaster) (we are limited to Quicktime due to the nature of our business) the problem we are having, is that we cannot find a way to make darwin streaming server allow more then 1 broadcaster per install, i need a person that can either advise me how to correctly setup darwin to allow 50 - 100 people to login to 1 server to broadcast live videos (using diffrent mounts such as /[login to view URL] and /[login to view URL]) each with diffrent user names and passwords... or, someone that can teach me how to install Darwin and run it more thne 1 time, on diffrent ports so that i can have 10 - 50 or more people on 1 dedicated server system...