In the old days when I first was coming up, you would turn up on set in the morning with your coffee, script, and hangover and you would figure out what you were going to do with the day and how you were going to play the scenes. You would rehearse and then invite the crew in to watch the actors go through the scenes. The actors would go away to makeup and costume and the director and the DP would work out how they were going to cover what the actors had just done.