14B-14. 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 120 units in week 7. Each unit of S requires 1 unit of T and 1 unit 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 1 unit of Y and 2 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 2 weeks to make T, 2 weeks to make U, 2 weeks to make V, 2 weeks to make W, 2 weeks 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. Construct a gross material requirements plan (type 0 if the input box is not used). Week Lead Time Item 1 2 3 4 5 6 7 (weeks) S Gross req Order release 2 T Gross req Order release 2 U Gross req Order release 2 V Gross req Order release 2 W Gross req Order release T 2 x Gross req Order release 2 Y Gross req Order release 2 Z Gross req Order release 1