Tagging content to groups in order to display it in sections on your site
As noted in Understanding our pages and the elements that compose them section, most types of nodes have groups (e.g. Content Groups, Faculty Groups, Biographical Groups, etc.). These groups, defined by your webmaster, are used to tag content to specific sections of your site. For example, a News Article node could be tagged to a Content Group called “Home Page - News”, which would then place it within a list of news items on the home page of your site.
Similarly, a webmaster could set up a slideshow that uses a Content Group called “Home Page - Slideshow”. Tagging content to that group would then place it in the slideshow.