Question Bank is a simple way to make quizzes more convenient. This feature allows categorizing questions depending on the subject.
You can find this option in Question Types.
Go to STM LMS > Quizzes > Question Settings if you are working from backend panel.
Or open your profile page *Frontend Course Builder (*is only available in Pro version), choose any course and open its Curriculum. Select a quiz or create a new and open quiz editor page.
On this page, select or create a question and in the Question Type select Question Bank.
Here you can select the category you need and specify the number of questions to show.
You can also activate Randomize questions option to position questions randomly in the quiz.
This is the final look of the quiz with the Question Bank option enabled.