How do I duplicate a quiz?

1. Go to the quiz you would like to duplicate, then click the three vertical dots beside the quiz, from the pop up menu click the Duplicate option

2. You will now see a copy of your quiz created right underneath the original, as you can see on the screenshot below.
 

How do I modify the questions for the quiz copy?

Go to the question bank, create a duplicate of the questions from the original quiz that you are interested in modifying for the new quiz copy, then add that duplicate to your new quiz copy:

1. From your main course page, click on the More icon in the top menu bar, then from the drop down select Question banks

2. From the page that opens, click on the shared question bank for the course:

3. Then, find the question you're interested in copying

 

4. And copy it, by clicking Edit and then Duplicate
 

5. When the duplicate question appears (under the original question more often than not) you may edit the copied question, saving it when done.
 

Now it is time to add the new question to the duplicated quiz. In order to do so, 

1. Open your copied quiz from the course page (the one you duplicated in the very first step) and click on Questions

2. Click Add → from question bank.

3. Press Switch bank on the screen that appears:
 

4. Select the course's question bank:

5. Find the modified question you wish to add, check the checkbox beside it, and click Add selected questions to the quiz.
 

6. Finally, remove the original question by clicking the garbage can icon beside the offending question:
 

You may now set up access restrictions for this new quiz if required.