How to extend the Widget Catalog of the CCM application?

I was able to extend the Widget Catalog of RM following the instructions on https://jazz.net/wiki/bin/view/Main/RMExtensionsInTheWidgetCatalog60.

But how can i extend the Widget Catalog of CCM? There is no according setting in the "Advanded Properties" of CCM.

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Meanwhile i found out how to extend the Widget catalog in the process configuration (Project Configuration > Configuration Data > Dashboards > Widget catalog Entries). Nevertheless i still would prefer to add my Widget to the catalog of the CCM and/or JTS application.