Using an XML definition file, you can set view, edit, create, and delete permissions for any UpStream object, as well as individual fields. Want to hide a field from certain users? You can do it with Advanced Permissions. Want to make certain objects read only? You can do that too. The Advanced Permissions extension allows you to define permissions for users in a nearly infinite number of ways. Choose individual users or user roles, and set permissions for nearly any object or field.