Hi,
In Odoo, this can be handled using reservation methods. Reservation methods control how products included in a delivery order (DO) should be reserved for delivery, ensuring they are reserved at the correct times, for the correct orders. There are three different reservation methods in Odoo: At Confirmation, Manually, and Before scheduled date. Please set the reservation is "Manually." Once a quote is confirmed, product availability must be checked manually, and the required quantity must be reserved manually.
For more details, please refer to the following links:
1. https://www.cybrosys.com/odoo/videos/v17/inventory/reservation-method/
Hope it helps.