In Odoo 17.1, how do I automatically route this scenario:

HQ is the parent company (and also the main storage location/warehouse for the entire organisation)

Manufacturing Location 1 is a branch (with some storage capacity)

1. Sales order comes in from HQ: Sell 100 widgets

2. Manufacturing Location 1 creates MO for 100 widgets -> Insufficient Raw Material A found 

3. Manufacturing Location 1 automatically creates Transfer Order requesting HQ to send Raw Material A

4. HQ receives Transfer Order -> Insufficient Raw Material A found in HQ

5. HQ automatically creates PO to buy Raw Material A from Vendor

6. HQ confirms procurement, arranges Vendor to delivery directly to Manufacturing Location 1

7. Vendor delivers Raw Material A to Manufacturing Location 1. -> Employee receives order and verifies receipt in system

8. Manufacturing Order is done, products are delivered from Manufacturing Location 1 to Customer

9. HQ invoices the customer and processes payment

I'm trying to have sales and purchasing done only from HQ, but the manufacturing branch makes delivery of items to customers.

Bonus: If there's a way to spit delivery from vendor to partially send to Manufacturing Location 1 and the rest of the shipment to HQ, it would be great. Ie. HQ orders 1000 raw material 1, tells vendor to send 100 raw material to ML1 and 900 to HQ in a single PO

Thanks for your help