At a manufacturing plant raw parts arrive on average every 3 minutes (exponentially distributed). Upon arrival, they are ground first at a grinding machine. The grinding machine waits until there are 8 parts. Then a grinding operator grinds the 8 parts as a batch. Once the grinding is finished, the grinding operator also needs to carry the batch to the next workstation at the drilling machine. At the drilling machine parts are drilled individually by a drilling operator. After being drilled, parts are accumulated in a cart until the cart is full with 10 parts in it. Once it is full, the drilling operator carries the cart to the next workstation at the packaging station. At the packaging station, a packager packages every 4 parts into a box (use JOIN command for the packaging). When the simulation starts, the packaging station has 200 boxes in storage. After packaging, the boxes are shipped (i.e., exit the plant)