The "Restrict By" folder permission that allows an Administrator to restrict a File Cabinet folder to specific users is the "Employee" option. This setting is used within NetSuite's File Cabinet to apply permissions on a user-by-user basis, offering a high level of granularity in access control. When a folder is restricted by "Employee," the administrator can specify exactly which individual users have access to the folder, as opposed to broader categories like groups, departments, or subsidiaries. This is particularly useful for sensitive or confidential information that should only be accessible to specific individuals within the organization. By selecting this option, administrators can ensure that only designated employees can view or modify the contents of a particular folder, enhancing security and compliance.References: NetSuite Help Center, File Cabinet documentation.