I've been working on my dungeon for a while now using the tutorials as a reference without any particular problems. Now I've run into some obstacles I can't solve without asking for help however. I have some enemy scenarios in mind I can't really solve.

First seems like a pretty simple problem. The detection range for the hostile NPCs seems a bit too big for my liking, while testing I've often found that enemies will run to me from 1-2 rooms away because they hear fighting. I don't want them to do this. Is there any way to decrease their detection radius, or make them ignore the player until a certain area is reached?

Second, I've made a place where NPCs of opposing factions are placed next to eachother and start fighting. I want them to only start fighting once the player is nearby so you don't miss out on the action. I figure there's several ways to achieve this, either by having the opposing NPCs spawn there or by making them all idle/docile. Can I do this somehow using the same methods as for making ambushes, or do I have to enter the dreadful world of scripting?

Third, I want an NPC to spawn once the player has activated a button. But I suppose this would be done using the same methods to solve problem 2.

I tried making a test scenario by placing a leveled bandit actor, ticked "Initially Disabled", then created a defaultActivateSelfTRIG zone, and then went to the Enable Parent tab for the bandit and linked it to the trigger zone. But when testing ingame the bandit was always standing there from the start (If I remove the trigger, the bandit will be gone as it should). Obviously I am missing something here.