This graphic shows a custom page in edit mode. on the left is an application panel in which the Panel Label is SourcePanel. In the Panel Properties section, Data Source is set to Performance per Process. When adding the widget is set to Update another widget. In the Communication with other panels section, in the Available event sources, ListeningPanel (widget2) is listed. On the right is an application panel in which the Panel Label is ListeningPane. under Panel Properties, no data source is specified. When adding the widget is set to Update another widget. In the Communication with other panels section, in the Available event sources, SourcePanel (widget 1) is listed.