Qty is not getting confirmed for MTO

Hi,

In the Sales order, the quantity is not getting confirmed automatically for the MTO scenarios, I have checked the all standard setup in configuration. Eventhough it is not working. Here below I have given the our scenario:

Scenario- MTO Sales order with delivery block at schedule line level

Action - Qty is not getting confirmed before release the delivery block, but qty should be confirmed automatically while creation of the sales order itself, which means, before releasing the delivery block.

Please let me know, whether the above Action is possible or not in standard. If possible, please share the check list for further checking.

Thanks.