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To add a User Defined Event to your interactive playlist, select the User Events tab under Media Library. Drag the desired event icon from the list onto a state. In the Events window, specify the desired transition behavior. You can also add commands to a User Defined Event after it has been assigned to a state.
Importing and Exporting User Defined Events
You can import and export your User Defined Events. Since User Defined Events are created on a per-presentation basis, the import/export feature allows you to save your User Defined Events and transfer them to new presentations as needed.
To import or export, click File > Import User Events or File > Export User Events. If you are importing, browse to the location where the events definition XML file is stored. If you are exporting, browse to a location where you want to export all User Defined Events currently defined for your presentation.