RE: Blanket / Scheduled Delivery & Fulfillment Orders
Blanket orders/ Call off orders/ part shipping/ scheduled orders all similar terms...
I wrote this a while back, it may have some helpful pointers.
timwappat.info/.../Dynamics-GP-Process-to-invoice-only-fulfilled-and-shipped-items-for-scheduled-drop-ship-or-call-off-sales-orders
There are different approaches, not all are covered in this document. You could have quotations that you turn into orders.
Sales orders with different requested ship dates on each line of the order, for each shipment.
Multiple orders with different ship dates, each order representing future shipment.
You could have a set of master lines at the top of the order, decrement the qty to call off and add it to a new line or new order.
Basically you need to play with the qty to invoice field and requested ship dates on both the order header and lines, this allows you to get creative, using smart lists to show when lines are due manually, or automating with sql jobs to shove orders into batches where work is due.
You can be very manual process or mostly automated, depending on your in house skill sets.