We get another look at Ashley’s powers. First, she can’t summon a platform out of someone who’s “out-of-range”, which would include trying to hit the drums meant for Olivia and Eric right now. Second, she can summon cowbells that correspond with each platform color, and hitting it allows her to throw the platforms wherever she’d like.
Sorry for the late update! My tablet was acting wonky, but it’s all good now. Really relieved that I was able to figure it out.