A structure element helps to structure your course.
In addition, all subordinate elements will "inherit" the access and visibility restriction settings, and if entered in the settings, an overview of the subordinate elements will be generated.
What you have to do
In your course, click on "Course editor" under "Administration" (top left).
The course editor will open.
To rename the course element, in the "Title" field enter the title you want to be displayed in the course. If necessary, abbreviate the title in the "Title in course menu" field. "Save" your entries.
Click the red cross (top right) to close the course editor. Select the "Publish automatically" option to publish the change.
The "Structure" element and the overview settings will not be displayed in the course view until it has been published.