Account Notification icon is located in the header menu. The number in the red circle shows unread notification count.
Users of the account can mark notifications as read by clicking the "Set all as read" link or can mark a single notification by clicking the "set as read" link next to each notification.
Clicking on "Settings" link opens notification settings dialog. Currently there is only 1 notification type, but we will look to add new ones
In this dialog there is a global setting for users to enable/disable receiving notifications. When we add new notification types, then users can enable/disable each notification individually.
All notifications for your account are listed in this Notification List page.