I’ve played more BG3 now, and maybe I’m an idiot, but I can’t figure out how to block anything. E.g. I’ll stand at the top of a ladder to block enemies from climbing up, but they’ll happily climb up and walk right through me. Or standing on a narrow beam, and somehow they go to stand next to me on the narrow side to push me off? What am I missing? How are you able to block any space?