At the most basic level the WMS is used to record operator activity (e.g. inventory
placement, inventory picked for a sales order, or inventory movement). The operator is
assigned a task to be performed by the supervisor. The operator records the task results in
the portable terminal. A WMS with more advanced capabilities can define tasks, plan and
prioritize tasks, assign tasks to operators, and guide the operators to perform assigned
tasks. Different tasks could be performed at each level within the same warehouse. This
is discussed in more detail below.