Okay, so I'm trying to make an event where a person leaves the room. I tried to make it so theres a move event and then change the actor's graphic to nothing, but this doesnt work. Once the actor reaches the door, she just stands there. The event is already placed on top of something else (and needs to be) otherwise I would just put her as the event and make it go to another event page where her sprite doesn't exist...

Does anyone know of another way I can get an actor to "disappear" when they reach a certain spot? Any help would be appreciated, thanks

Have you checked the move route? If there's is an accidental extra step, that means the event is trying to collide with another event. Try unchecking "wait for completion". Anyway, to answer your question, you can set opacity to zero. You can also trigger a common event. Then make an additional event page for the moving event and set the graphic to nothing, then set the common event for the event page to the one you triggered.

There is also another simpler way by using switches. I used to do this often with mine.
After you made your move route then you make a new page on that event. Under the conditions make a new switch. I would name it "Disappear" or w/e. Make sure your graphic on the 2nd event page is blank. Lastly in the 1st event page under your move route make a new event that calls the switch operation. Make it switch on. This will make your actor disappear forever and then you can make new events in its general area.

Hope this made sense.