Configuring Mashup part Select System configuration > Mashup relations. Select mashup. In the main classes section of the Mashup part (main classes) section, click New. Note: The Mashup part (main classes) section is disabled for webmashups. Specify this information: Path Provide the xaml filename. Note: You can find the xaml files on the mashup packages. Name Provide a name for the mashup. Click Save.