Widgets details can be found in article Dashboard Widgets
Some of the widgets need to have set additional settings. The details of settings are described in this article.
News settings consists of two tiles - News Area and News.
It provides a functionality to create separate groups of News. Administrator can easily create groups like Global, Marketing, Internal, News for Contractors etc. The news area can be shown or hidden according to access granted in Organization Chart Category. This kind of restriction of visibility can be set in Limited access.
It contains simple settings of new message in News and Limited access. The limited access works in same way as in News Area with one difference - the restriction is applied on particular message in News, instead of entire group.