Multiple player starts

[powers2005]

I am nearly done my first complete DM map (been doing a lot at once)!... But i dont know how to add more than 1 player start in multiplayer  :(
i know how to in SP with a trigger but not for DM's. is there a tutorial for this? can anyone help me? or will i be stuck with incomplete maps for the rest of my life......or am i just being blind and its easy to do?
Once i do this, i will eventually be an official Mapper.

[Dark Lord]

just right click the floor and go to "add player start here"

that's all you have to do, unless you are talking about something more advanced and i'm not realizing it...