Available but not shown on course page
"Available but not shown on course page" hides the item on the home page of the course. Students can interact with that item only if you linked to it from somewhere else. You can choose this in the settings when creating the item or later in the drop down under "Edit" for the item.
To make an item on the course home page visible to students, be sure to click on Show in the Edit options.
Here is a link to further information on this: https://support.sou.edu/kb/articles/faculty-items-available-but-not-shown