The product structure. The time-phased product structure. More Info eks 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. quirements plan to reflect these changes. nstruct a new net material requirements plan (enter your responses as whole numbers)