The function to merge announcements allows for a central course to push out announcements to other courses. For example, a Nursing Program includes twenty different courses. But a single Nursing Program Master course or project site could be used to push announcements out to all twenty of the Nursing Program courses. Announcements that are merged from the Master course cannot be edited or deleted in the individual Nursing Program courses. Those courses could create additional announcements that would apply to their specific course only. Those would appear in addition to the announcements merged from the Master Course.
Select the Announcements tool from the Tool Menu of your site.
Check the box beside the course from which this course will draw its announcements, and then click Save.
This image shows the Master Nursing site with announcements created.