You can enable the re-take quiz option in these easy steps below:
1. Click on the Commerce tab on the left and scroll to Courses.
2. Click on the course you want to add a quiz to and click on edit.
3. Click on the Curriculum tab and then click on New Quiz in the section you wish to add one.
4. Label your quiz and then make modifications to the quiz.
5. Quiz can be in Multiple Choice or Multi Choice formats.
6. In the Detail tab, you can toggle the Re-take quiz button to enable or disable.
7. Also add the number of quiz attempts in the box below.