The worst-case pre-construction plan is to have no coordination at all. The order in which pipe spools are fabricated bears no relationship to the order in which areas are being prepared on site. With no communication between fabrication and installation to coordinate their respective work with one another, each crew will draw resources from the queue available to them in the order that suits them best. The fabrication crew may select spools based, perhaps, on the order in which cutsheets are provided to the fabrication shop. This order may have nothing to do with installation sequencing. The preparation crew may select one area after the other based, perhaps, on which one is nearest to their present location. This situation has been implemented by defining the DRAW ORDER for choosing resources in the Cut Sheet queue through link DW2 to be random, and leaving the discipline in the Work Area queue as the default FIFO (anything else would appear equally random relative to the randomness in drawing cut sheets).