About Pinned Corpus Manager Widgets
You can pin as many Corpus Manager widgets as you want, but all of them, across all your dashboards, always display the same content; that is, all the sources you added to your Corpus Manager and all the Libraries you are a member of, if any.
On synchronized dashboards, Corpus Manager widgets are contextualized: Each dashboard member only sees their own Corpus Manager in the pinned Corpus Manager widgets.