You can add a SharePoint Sites widget to a place (group, space, or project) that has been socialized with a SharePoint site. Only place administrators have the ability to customize and add widgets to their places. For more on socializing places see Configuring Jive Socialization for a Site.
The SharePoint Sites widget is designed to surface the hierarchy of SharePoint site(s) based on how socialization is established or "mapped" in SharePoint. The SharePoint sites widget shows the SharePoint site names, last modified time, and provides a link to directly take a Jive user into the respective SharePoint site.