"Show on calendar" controls whether or not the course will display in the calendar block, which can be added to the homepage or a learning group.
To set the catalog calendar display options:
Navigate to the course
Click "Edit."
Click "Course settings."
Check the checkbox for "Show on calendar" to display the course on the catalogcalendar. Uncheck the checkbox to remove the course from the catalogcalendar.
Click "Save."