Trigger map redirection

Hello Facepuncher’s i was wandering how you make something like a trigger box connect you to a certain server. For instance, I have 2 servers one with Deathrun and one with Darkrp and i would like to make a kind lobby system. By this i mean a room with pictures of the maps the server is on and some info on it. Then there is a platform and when you walk on to it it takes you to the corrisponding server. Now i know you gotta use trigger but what things would i need? Please reply!