First, create a B12 Quiz Maker widget on Common Ninja.
On the widgets catalog, find the Quiz Maker and enter the Editor.
When you're done creating the Quiz Maker widget, click on the Save Changes button at the right top corner of the editor.
If you don't have an account on Common Ninja, you'll have to register first.
When you're ready to add the Quiz Maker widget to your B12 website, click the Add To Website button at the top bar of the Editor.
On the window that opens, click the Copy Icon to copy the widget embed code. In the next steps, you will paste this code into your B12 website.
Now, Let's head to your B12 website's editor.
On the B12 website editor, enter a page where you wish the Quiz Maker to show, and click on Add Section.
Click the Add Integration button.
Click the HTML Section to add it to the page.
Now, in the Code window, simply paste the Quiz Maker embed code you've copied before.
Click the Add Integration button located below the Code window.
Click the Publish button at the top right corner of the screen, to publish your site.