Reserving Lines on Ship Set

Hi All,

We are on Ebiz 12.2.

Scenario:

An order is created with 3 lines and all under one ship set so that they are all shipped together.

Out of 3 only 2 are currently available (onhand). The 3rd line maybe available after 3 weeks

The order is booked and all 3 lines gets scheduled with date 3 weeks from now. So when the pick release is run no reservation is performed against 2 available items.

After 3 weeks we do not the first 2 items and 3rd item is available.The pick release tries to pick all 3 and backorders all 3 since they are part of ship-set.

Is there a way that we can reserve the first line items and so that when the 3rd is available the whole set would be released.