Now that you have made a quiz, take a screen shot of the quiz preview page and submit it for your instructor to see!
When you are ready to submit click the blue "Submit" button, add your screenshot image in the rich text editor, then turn it in. You will then be prompted to "peer review" two other submissions. This is just so you can see that feature and have a chance to see some of your peers' work.
Can't change a rubric once you've started using it.