To speed picking times, horizontal carousels are often used in an integrated workstation called a “pod.” Software and pick-to-light technology allows the carousels to work in conjunction with each other. As the worker picks from one horizontal carousel in the pod, the other carousel is pre-positioning the next pick. This minimizes worker downtime and increases throughput. Moreover, horizontal carousels arranged in pods offer great flexibility. With a simple software adjustment, the pods can be easily reconfigured to meet seasonal peak order times. A pod of four horizontal carousels can operate as one pod with one operator.