Automatic Spawning

[WorldEdit]

I'm making a map that uses automatic spawners kind of like the last mission in the Founding of Durotar campaign. Ive looked for other uses of automatic spawners in different maps, but the spawner triggers are associated with a lot of other in-map mechanics. Help?

 

[Devrak]

Not everyone has played founding of durotar. What does the automatic spawning do?

 

[WorldEdit]

Oh, well the forces that spawn seem to be allies of the heroes that you control and they spawn and rush into the enemy base and after wave after wave, eventually make it to the point where they can aid you against the final boss.