Hi, I'm using Odoo ONLINE 16.0 enterprise. I have a problem with the forecasted quantities. here is the scenario: 

1. We bought a quantity of 100 from product X and deliver it to the warehouse.
2. The on hand and forecasted quantity is updated to 100.
3. Now when we sell this product X the process of the selling goes through 5 steps until issue the invoice:
4. 1. Creating the sale order
   2. Confirm the sale order
   3. Create the delivery
   4. Confirm the delivery
   5. Issuing the invoice
5. When we create a sale order of the product X for the quantity of 20, the forecasted quantity updates to 80 and the on hand quantity still 100. 
6.  When confirm the sale order, the forecasted quantity still 80 and the on hand quantity still 100. (no change)
7. When create the delivery, the forecasted quantity still 80 and the on hand quantity still 100. (still no change)
8. When confirm the delivery, the forecasted quantity still 80 and the on hand quantity updates to 80.

​My problem is that the system trig the forecasted counter and reserve the quantities based on unconfirmed sale order (step 4). I want my system to trig the the forecasted counter and reserve the quantities after the sale order in confirmed (step 5). Is that possible? and how it can be done?

​The reason behind that is because we create a lot of sale orders, and only few of them is confirmed. So, the system reserved the 100 quantities based on unconfirmed orders. Let's assume that we have 9 sale orders on the product X with a quantity of 20 in each order (forecast will be -80, on hand 100). and one sale order with a quantity of 50 (forecast will be -130, on hand 100). If this last order is confirmed the system will NOT issue the delivery for this order because the quantities is reserved for other unconfirmed sale orders.

Thanks.