Announcements can created almost anywhere in Canvas.
Announcements are used to communicate with students about the logistics of your course. As soon as you have created an Announcement, Canvas takes care of notifying students according to their preferred Notification Preferences.
In Canvas, you have the option of feeding posts from your blog or other information sources directly into your Announcements page using RSS. RSS feeds can be filtered by keyword to prevent irrelevant content from entering the course. Students who use RSS readers can subscribe to course Announcements outside of Canvas.
Please watch the following video that walks you through the steps of how to add Announcements: