See the Notifications link in the global/utility navigation in the header.
This pattern builds on the Utility Navigation pattern. The notifications should appear in a table of class ux-ntfy, which is invisible by default. ux.js will add event handlers to provide a hover state that is both clickable on desktop and touchable on tablet to show the notifications on click/tap. ux.js will also update the table rows so that a user can click anywhere in a row (rather than just the name) to follow the notification link.
© Optum 2015 - Matt Lavallee - Senior UI/UX Designer, Inc. - All Rights Reserved