If you forgot to add something to your announcement, you can easily edit and add more information.
Editing an announcement will create a notification in the User Dashboard and Course Activity Stream. If you want users to receive the edited announcement via their notification preferences, you will need to create a new announcement.
Your course must be published for students to receive announcement notifications. Students do not receive new announcement notifications for announcements imported from another Canvas course.
In Course Navigation, click the Announcements link.