Run many dedicated servers and connect players to specific one

Hi everyone. As I understood, one dedicated server can’t serve more than one match at one time. So you need something like a server manager on web server, which will run several servers and connect players to them. But how to do that? I have made already a django - based (with rest Framework) web server that can communicate with engine via VaRest plugin. But what should I do next? How to connect players to specific instance of a server? Thanks.
p.s. sorry for my bad English