private void addTutorial() {
        System.out.print("Enter module code for tutorial to be added to:");
        String modCode = sc.nextLine();
        if (!mrsb.isNewModule(modCode)) {
            System.out.println("Add Tutorial: ");
            System.out.print("Enter group number: ");
            String groupNum = sc.nextLine();
            boolean isNewTutorial = mrsb.isNewTutorial(modCode, groupNum);
            if (isNewTutorial) {
                System.out.print("Enter time: ");
                String time = sc.nextLine();
                System.out.print("Enter venue: ");
                String venue = sc.nextLine();
                mrsb.createTutorial(groupNum, time, venue);
                System.out.print("Enter tutor's staff number: ");
                String staffNum = sc.nextLine();
                mrsb.linkTutor(staffNum);
                mrsb.linkModule(modCode);
                System.out.println();
                System.out.print("Tutorial for " + modCode + " has been successfully added!");

            } else {
                System.out.println("Sorry, this tutorial already exists!");
            }
        } else {
            System.out.println("Module does not exist!");
        }
    }