When you share an announcement, any assets within that announcement (images, files, etc.) will be included in the shared file. Announcement settings, including delay posting dates, are also included in the shared announcement.
To share course content, you must have the Course Content - add / edit / delete permission enabled.
Shared content does not count against course or user quotas.
In Course Navigation, click the Announcements link.
Click the name of the announcement you want to send.
Open Announcement Options
Click the Options icon  and select the Send To... option .
To send your announcement to another instructor, click or type in the Send to field . Then click the name of the instructor to receive your announcement .
Note: You can send the announcement to multiple instructors at one time.
You can view all selected recipients in the Send to field .To remove a recipient, click the Remove icon .
Click the Send button.
View Sent Notification
Canvas displays a notification when content sends successfully.
View Shared Content
When an instructor receives shared content, a badge displays on the users' Account icon  and in the Shared Content link .