Limited troop/no building maps...

I'm pretty new to the world editor and have one question (for now, at least...): how do you make maps with a set number of troops? Kind of like the first night elf mission in TFT, where both sides have no buildings. Thanks.

Do you mean, pre-placing units?

Yeah, but you can't build any more and have no buildings.

Open up the tab called "Triggers"
Delete the trigger in the bar on the left called Default Mellee.
Don't give the player any whisps. ;)

Thanks for the help.