Company and User Security Matrix - Why?
From SmartWiki
The Company and User Security Matrix allows configuration of very granular access and permissions to companies and users (organizations and contacts) based on user roles. This approach is very similar to the Security Matrix model used to grant user access to different areas in your SmartSimple system. This enhancement makes it easier to enable and restrict view, edit, add, delete, and/or lookup permissions for UTA users based on their specific roles.