What ghosts were doing what?
It's explained in the film by Tangina that there is a dark and evil presence in the house, or "The Beast" as she refers to him, and also many souls simply lost on the way to their next destination. Who is doing what as far as the haunting antics go?
I think it's safe to say all the malicious stuff in trying to capture Carol Anne, such as the giant head that comes out of the closet and the creature that guards the bedroom door, is The Beast itself, but what about some of the other instances? The stacked chairs and chair moving from one side of the kitchen to the other...is that the other ghosts, or The Beast as well sort of lulling them into a false sense of security by acting friendly? The toys moving about in the bedroom and the man's face peeling off? Can we assume the ghosts in general are all contributing to the bad goings on, as they are unhappy the cemetery has been dug up?