You can add items/pages using the administration button in the enotify page.
Click administration button -- > add(general) page.
E-notify module sends out notification email to people that are signed up for the page, every time there is a change on that particular web page and you want signed in users to be notified about the change. If a page has subscribers, then you will see the radio button(yes/no) in the editform. The yes/no option will be visible only if at least one user has subscribed to that page.