What’s that little arrow icon to the immediate right of each course component?
That’s the very useful Action Link drop down menu. Clicking on it will produce a list of all possible actions associated with that item. For example, clicking on the action menu link beside a file name gives you the options to preview the file, edit its properties, copy it, etc. But clicking on the action menu link beside “Create Column” within the Grade Book lists all the grade types you can assign to a grade column.