can someone help? will leave good review

Suppose we are formulating a Master Production Schedule (MPS) for an item. Week 0 projected on-hand is 77 units. The lot-size policy for this item calls for L4L ordering. Lead time for this item is one week. There are no safety stock requirements. Here are the demand forecast and the booked orders for this item ... What will be the order size of the first MPS Start Quantity that is needed? The Master Production Schedule for Item J shows booked orders as follows: POH0 is equal to 423 units. The earliest arrival quantity, for 750 units, has been scheduled for Week 3. How many units are available to promise for the Week 1 /Week 2 window