NPC Actions

Hello, any way to make a NPC that you spawn then lock them in place run and attack? I lock them in place so they don't wonder. I set them to aggressive, but they wont attack. I know I locked them, but it is either that or they wonder. I want to be able to have my NPC's to be like how the game drops them and they are not moving but will attack when you get close. Is that possible?