Hello i'm using Odoo 14 Community Edition
My issue is: i have 3 companies A,B and C: B and C are childen companies of A
Inventory of company A should always be B'inventory + C'inventory

So i could display on my e-commerce website all products in both companies A and B 
It would be great if i could automatize the SO made from company A' eCommerce website to go for company B or C depending the product's availablity