Way to setup/load NPC positions on a map?

I searched for NPC mods, but is there any kind of mod that allows you to setup NPCs on a map, then load those positions?

Like setting up AI to do a co-op mission on any map?

(User was banned for this post ("Wrong section" - mahalis))

You most likely are just going to want to make and edit a map, when you have the map in your hammer editor you can add and remove NPCs, props, and much more that the source engine will allow.

I think he means something where you could set up NPCs and have them spawn in a way similar to using the adv. duplicator toolgun. Which would be amazing.