pls help need done in 15 min!!! cant figure it out!

Using the product tree and table given above, Planned Order Releases of "Item Z" are units in Week units in Week units in Week respectively. Planned Order Releases of "Item M" are units in Week units in Week , respectively. units in Week Planned Order Releases of "Item F" are units in Week respectively. units in Week Planned Order Releases of "ItemA" are units in Week units in Week respectively. Planned Order Releases of "Item B" are units in Week units in Week units in Week respectively. Please indicate your answers in timely (chronological) order. Harry Portor in preparing a Material Requirement Plan (MRP) for a new lawn sprinkler model z The product structure tree for the first pro given below. You are asked to help Mr. Porter to develop MRP plans for all productiems by using the given information 2 Lawn Sprinkler LTM1 M(2) Water Motor LT2 F11) Frame Assembly LT1 A(6) Alum, Assembly LT-2 B(4) Metal Screw LT-1 A(10) Alum. Assembly LT2 B[3) Metal Screw LT-1 Notes: LT: load time Numbers in brackets indicate multiplicity, e.g. F(1) means 1 F is needed to make each Z On-Hand Allocated Lot size Safety Stock Product Item Lead time (weeks) 1 2 LFL 50+ 40+ LFL 60+ 120 100 150 150 73 8:8888 0 60 20 30 0 8888 1 B Week 1 2 4 5 7 8 50 50 10 Gross requirements Scheduled receipts Available Net requirements Planned order receipt Planned order releases Table for item M (50+; LT=2) Week 2 3 5 6 Gross requirements Scheduled receipts 20 Available Net requirements Planned order receipt Planned order releases Week 3 5 6 7 8 Gross requirements Scheduled receipts Available Net requirements Planned order receipt Planned order releases Table for item A (LFL; LT=2) Week 2 3 5 6 IN 8 Gross requirements Scheduled receipts 600 400 Available Net requirements Planned order receipt Planned order releases Table for item B (60+; LT=1) Week 1 2 3 4 8 CO Gross requirements 220 Scheduled receipts 280 Available Net requirements Planned order receipt Planned order releases