14B-4. Can someone show me how to do this problem?

Will rate a thumb up for good response thanks so much (PLEASE CIRCLE OR HIGHLIGHT final answer thx)

The demand for subassembly S is 80 units in week 7. Each unit of S requires 1 unit of T and 2 units of U. Each unit of T requires 1 unit of V, 1 unit of W, and 2 units of X. Finally, each unit of U requires 2 units of Y and 3 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 1 week to make T, 2 weeks to make U, 2 weeks to make V, 3 weeks to make W, 1 week to make X, 2 weeks to make Y, and 1 week to make Z. Click the icon to view the product structure and the time-phased product structure. Click the icon to view the on-hand inventory. Suppose that in addition to 80 units of S, there is also a demand for 30 units of U, which is a component of S. The 30 units of U are needed for maintenance purposes. These units are needed in week 6. Additionally, a new order has been received for 80 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). Item Week 4 5 Lead Time (weeks) 1 2 3 6 7 8 S Gross req On hand Net req 2 Order receipt Order release T Gross req On hand Net req 1 Order receipt i More Info Item Item S T On-Hand Inventory 20 20 40 30 W X Y z On-Hand Inventory 25 25 40 240 V Print Done IVULTY Order receipt Order release U Gross req On hand Net req 2 Order receipt Order release V Gross req On hand Net req 2 Order receipt Order release W Gross req On hand Net req 3 Order receipt Order release Gross req On hand On hand Net req ED 3 Order receipt Order release X Gross req On hand Net req 1 Order receipt Order release Y Gross req On hand Net req 2 Order receipt Order release N Gross req On hand Net req 1 Order receipt Order release