hallo, our customer will use Odoo with two companies sharing most of items: products, customers.

Fiscal position is company-related and in ir_property enters with the id of the company of the user entering the customer data.

Our aim is that the fiscal position for each customer gets associated to both companies; we focused on two possible solutions:

1. the fiscal position automatically enters in ir_property with NULL company_id
2. the fiscal position automatically enters in ir_property twice, for each company_id.

Questions

1. is there any more suitable solution?
2. which is the method that writes the fiscal position in ir_property?