restricting a user to access 2 of the 4 companies?

I have a client with 4 companies set up in their 3.6 native database. They need the ability to restrict certain users to only be able to access 2 of those companies. How is this easily accomplished? Thanks, Jim

through security. In roles just specify the company field. offcouse you will need to put the roles twice for each company

perfectly right, the primary key for that table is : User ID,Role ID,Company But I would consider to not completely duplicate all roles. (Like the “All” role)