How to restrict products for specific customers?

Hi all,

How can we setup the systeme so we are able to have :

  1. Specific customers ; customer groups or a chain of customers that are allowed to buy specifics items or group of items

  2. Customers that cannot buy items from item group 1 and specific customer A from customer group is allowed to buy item ABC from item group 2.

Thank you

The option for standard is to use product filters. You have to have configured the items for warehouse management.