If "Deferred feedback" was selected above in "How questions behave" then you CANNOT select options in the "During the attempt" column. Options for feedback, students seeing their points, students reviewing the attempt, etc. are only available after the attempt. Use the embedded question mark help to understand the different categories. Carefully select what you want students to see in each column: "During the attempt," "Immediately after the attempt," "Later, while the quiz is still open," and "After the quiz is closed."