The 4D plugins are stored in the plugin folder (mac4dx or win4dx folder) and you can place this folder in one of three locations: next to the database structure file, next to the 4D application, or in the active 4D folder of the computer. So which is the best place? This depends on the scope of the plugins. If you place the plugin folder next to a database structure file, it can only be accessed by that database. If you place the plugin folder next to a 4D application, the plugins are accessible to any database opened by that 4D application. And if you place the plugin folder in the active 4D folder, the plugins contained in the folder can be used by any database opened by any 4D applications within the system.