...
To open the Task Materials pane for service calls, choose Service Calls . Select a service call, choose More, and then choose the Task Materials tabMaterials tab.
To open the pane for appointments, choose Appointments (or choose the Appointments tab from a service call). Select an appointment and choose Complete, and then choose the Task Materials tab.
The Task Materials pane displays the equipment and its related sublocation that is assigned to the service call, the tasks that are associated with the equipment and service call, and the task materials that are associated with those tasks.
...