please explain well..

Click the icon to view the product structure and the time-phased product structure. Click the icon to view the on-hand inventory. for 90 units of S due in week 8 . Modify the net material requirements plan to reflect these changes. Construct a new net material requirements plan (enter your responses as whole numbers). list Click the icon to view the product structure and the time-phased product structure. Construct a gross material requirements plan (type 0 if the input box is not used). Click the icon to view the product structure and the time-phased product structure. Click the icon to view the on-hand inventory. for 90 units of S due in week 8 . Modify the net material requirements plan to reflect these changes. Construct a new net material requirements plan (enter your responses as whole numbers). list Click the icon to view the product structure and the time-phased product structure. Construct a gross material requirements plan (type 0 if the input box is not used)