Level Streaming and Ai interaction

I have multiple actors on my first level that allow me to go to two separate levels other than my starting level. I have roaming Ai’s in my game and when they walk into the actors it takes my character to another level, how do I stop the Ai’s from being able to interact with the actors that take me to another level? Also I have another problem/question when i go from my starting level to either one of my other levels, when I return from the other levels to my starting level I i spawn at the same point, is there any way i can change the spawn point instead of spawning at the same point from two separate maps?