This executive briefing reviews the theory of replenishment in the warehouse. It discusses when items should be replenished and when they should be picked directly from reserve stock. It further discusses the handling and management of multiple reserve locations and of multiple forward locations. The use of cascading replenishment and the practice of using replenishment facilities to manage items with highly-variable demand are both covered. The result is a comprehensive review of the replenishment function that has the potential of both simplifying your operation and, at the same time, improving productivity.