I wanted to make rocks fall from the cave ceiling and block the player from exiting.
Yes. You can do it either with Verse or with a sequence. Sequences are easiest if you’re a visual person.
i need help
This likely doesn’t require a simulation or anything. As GraemeBB said, a sequencer is a very easy set up. You can add trigger volumes for them, and you can spawn actors in and out, and animate with anim curves quite easily.