Development 4 Prestashop website: shipping from 2 countries

Hello, We have a new e-commerce website, from Prestashop. Here is the issue we need to solve: We ship from 2 countries. Products x, y, z ship from Country C1 where we use carriers/Shipping companies S1, S2 and S3 Products a, b, c ship from Country 2 where we use carriers/Shipping companies S4, S5 and S6 Obviously we currently can set this up for Country C1. How can we set up Country C2? We would like clients from C1 to get offered only carriers S1, S2 and S3. Same for clients from country C2 with carriers S4, S5 and S6. So we cannot just have all carriers listed for each product. We need each product to be linked to either C1 or C2 or to one list of Shipping companies. We remain at your disposal if our explanation needs some clarification. How much would it cost to fix this issue? Best regards Mark