Final answer:
Input/Output (I/O) control is used to manage work flows and queues at a work centre, ensuring that production is efficient with minimized WIP and avoiding overloading of resources.
Step-by-step explanation:
Input/Output (I/O) control is primarily used to manage work flows and queues at a work centre. This involves overseeing the process of work as it moves through different stages within the production environment. The goal of I/O control in this context is to ensure there is a smooth and efficient flow that eliminates bottlenecks, aligns production schedules with demand, and allows for effective resource utilization. It is vital for keeping the balance between not overloading a work centre, therefore minimizing the Work in Process (WIP) and ensuring jobs are completed in a timely and efficient manner. By contrast, increasing work flows excessively or maximizing make-span without consideration could lead to inefficiency and elevated levels of WIP.