. . . there is no big difference. If you are going to do a show and going to do it well, you do the same thing if you have 75 units or if you have 175 units. Yes, you are concerned about the time. You figure out your focus time for the number of the units. 36 theatre design & technology Above, Shirley Prendergast (far right) with director Douglas Turner Ward (far left) and cast members of The River Niger, produced by the Negro Ensemble Company, Brooks Atkinson Theatre, New York, 1973. Photo by Bert Andrews. Below, Shirley Prendergast's lighting plot for The River Niger. summer 2014