Quite a few of my dreams are in third person POV, rather than first person. For example, last night/this morning I had a dream involving a policeman. "I" only appeared one or two times, in the beginning when I gave the man a note, and near the end in a different scene. The rest of the dream was sort of like a movie that followed the policeman around. How would I become lucid in that dream? Or, to be more specific, how would you perform RCs, etc? Unless I manifest into a body the moment I think "this is a dream," I don't see how I can become lucid and start doing things.

Sorry if this is a bit unclear. I'm not sure if I explained my question well enough.