The best way to find the sub-focuses is to reduce the dream to its simplest form. How would you tell someone the dream using as few words as possible?
Let’s say you dream you’re out on a walk, and you run into a stranger who is wearing all white and seems almost to glow. He hands you a scroll and tells you it is for you to read and keep. As soon as you take it from his hand, you find yourself on a stage in the middle of a stadium, and there’s a crowd of people all around you.