This dialog allows you to decide which plugins get loaded at program start. At present, modules don't get loaded/unloaded at runtime, so you need to restart Mahogany for these options to take effect. On the top left you see a list of all modules that Mahogany has found in either the global modules directory or in your local directory ($HOME/.M/modules/). The window below shows some information about the module currently selected in the list, such as the name, author, a description of what it does and the name of the interface it provides. The interface would e.g. be ``Scoring'' for the plugin providing the functionality for scoring messages and is used by the program to find the right plugin for a given operation.
Any changes to the plugin module settings will only take effect after you re-started Mahogany!