"In discussing the process with the actors, I made it clear to them that they could improvise but that the sum total of their improvisation needed to impart certain plot points, and schematic material"

This quote by Mike Figgis is talking about the procedure of working with actors on a movie. He is stressing the significance of improvisation, but likewise making certain that the improvisation is still in line with the plot and schematic product. He is suggesting that the stars need to be provided the freedom to improvise, but that the improvisation should still remain in line with the overall story. This is necessary since it enables the actors to bring their own creativity to the task, while still making sure that the story is being told in the way that the director planned. Figgis is stressing the significance of partnership between the stars and the director, and how improvisation can be used to improve the story. By permitting the actors to improvise, the director can produce a more vibrant and interesting story.