Unfortunately, the DesignPLUS Rich Content Editor tools are not available when working with New Quizzes. Canvas has not provided a way to integrate additional customizations tools into new quizzes.

Since the New Quizzes LTI tool creates an assignment in Canvas, our Module Builder has the ability to duplicate a New Quiz as a template just as it is able to do with other assignments but, currently, that is the extent to which we can help with new quizzes.