Much depends on how the "large Questions bank" is organized. If your admin simply has one category with all these questions, for example, then it would be hard to do what I think you want to do. If the admin has arranged the "large Questions bank" by chapter, then it is much easier to do.
Parts of your question puzzle me. "He wants the students to construct..." So the students are going to create their own quizzes? I don't understand "tutorial" from your question. "prepared by him..." Who is "him"? The admin, student, instructor. "Automate the process..." I don't understand what you want to automate.
Others here on Moodle.org might have a better grasp of what you are trying to do. I wanted to reply to you just in case others don't understand, just like me.
Parts of your question puzzle me. "He wants the students to construct..." So the students are going to create their own quizzes? I don't understand "tutorial" from your question. "prepared by him..." Who is "him"? The admin, student, instructor. "Automate the process..." I don't understand what you want to automate.
Others here on Moodle.org might have a better grasp of what you are trying to do. I wanted to reply to you just in case others don't understand, just like me.