Model B describes perfect coordination. The fabrication crew and the installation crew plan before starting their work and decide on the sequence in which to draw resources. Cut sheets and areas are assigned sequence numbers so they can be drawn in FIFO order (STROBOSCOPE's default discipline). CutSheets 1 through 40 will go to fabrication before 41 through 80, and so on. Similarly, Area 1's prerequisite work will be performed prior to Area 2's, and so on