While still in the quiz, click Edit Quiz.
Click on the question cue point on the timeline.
Enter your changes on the quiz editor screen and click Save.
Click on the x near the answer to delete an answer. Click on the 3 dots to shuffle the order of the answers. Click Delete to delete the entire question.
To Preview the quiz, click the Eye icon below the player.
When you are done creating or editing the quiz, click Done.