How to set projected available balance on the date based on lot status?

I've got a requirement described as below:

- Some in occupied quality checking lot status on-hand need to be included in projected available balance when system runs planning. (Example: lot A of Item PRO1 quantity =100, production date = 25-Mar-2017, quality check lead time = 4 days, planning date = 26-Mar-2017, projected available balance from 26-Mar to 28-Mar-2017 will NOT include that lot but projected available balance from 29-Mar-2017 will include that lot.)

So the first question is that how to do that?

The second, I'm researching for Lot Maturity Days for supporting this issue. As I know that it's used to calculate the Maturity Date of the Lot. But is it used to restrict some transactions or just show the information?