Editing the Course Summary
Courses are the pages on Moodle where instructors can add and organise learning materials and activities for their students.
The Course Summary section should briefly explain the topics are areas of interest that will be covered over the coming semester of teaching. This will either be blank or filled in with some placeholder text that you should remove before releasing the module.
In your course, go to the administration setting cog in the top right and Edit Settings
Scroll down to the Description section and add your Course Summary information. Scroll down and save your changes once you are done.
More information on course formats are available on Moodle Docs