I had to resort to an offline solution for this. I made a Python app to list all of these.

I pasted my code here: https://pastebin.pl/view/f7a694c9

Just install the imports, replace the user/pass/database fields correctly, and in the field sale_order=[] place your sale orders. It should return an excel file.

Beware of Odoo Studio custom fields (x_studio...) in the code.

Maybe i did not explain very well.

For example, i have sales quotes s0001, s0002 and s0003.

I need to be able to select (for example) s0001 and s0003 and to join the BoMs of all these quote's products and print them. So i can have a report of all the products i need to buy in one single report.

For example, i select quotes S0001 and S0003 from my sales view.:

S0001:

Product1:

Wood - 1

Glass - 2

S0003:

Product2:

Iron - 1

Glass - 3

-----------------------------

RESULT:

Wood - 1

Iron - 1

Glass - 5

I understand now. Odoo doesn't actually know anything about the products on a Quotation until they are confirmed and the procurement logic kicks in to try to fullfill them from stock, order them or make them. So I can't see a way for you to project demand until you confirm, at which time you can then look at the Forecasted Inventory report.