The Plug-in Manager lets you manage plug-ins dynamically without any initialization required. The Plug-in Manager provides a list of all plug-ins found in the 3ds Max plug-in directories, including the plug-in description, type (object, helper, modifier, and so on), status (loaded or deferred), size, and path. The Plug-in Manager provides options to load or tag as deferred, any particular plug-in, regardless where they reside on disk.
When you start the Plug-in Manager, it scans through all the loaded plug-ins and lists them in the Plug-in Manager dialog. 3ds Max looks for plug-ins in a couple of places:
To use the Plug-in Manager via MAXScript, see the Interface: pluginManager topic.