We want to be able to prevent users from making some associations within specific object types. For example, in a Business Class object we want to prevent a user from associating the Business Class to a System. I know there is a way to remove the System from displaying on the Associations tab, but I can't seem to figure out how to do it. Has anyone else done this and know how to do it? We are using ProVision 6.2.1. Thanks!