public static void ShowMembers(StudentsList studentsList, TeachersList teachersList)
        {
            int showList;

            Console.WriteLine("Choose below: ");
            Console.WriteLine("1. List of all students: ");
            Console.WriteLine("2. List of all teachers: ");
            Console.WriteLine("3. Go back to the main options page");
            int.TryParse(Console.ReadLine(), out showList);
            while (showList != 1 && showList != 2 && showList != 3)
            {
                Console.WriteLine("Choose:\n1. Remove a student\n2. Remove a teacher");
                Console.WriteLine("3. Go back to the main options page");
                int.TryParse(Console.ReadLine(), out showList);
            }
            if (showList == 1)
            {
                studentsList.ShowAllMembers();
                Console.WriteLine("Press any key to continue...\n");
                Console.ReadKey();
            }
            else if (showList == 2)
            {
                teachersList.ShowAllMembers();
                Console.WriteLine("Press any key to continue...\n");
                Console.ReadKey();
            }
            else
            {
                Utils.DisplayOption();
                Console.Clear();
            }
        }
        public static void DeleteMember(StudentsList studentsList, TeachersList teachersList)
        {
            int remove;

            Console.WriteLine("Would like to remove a student or a teacher? Choose below: ");
            Console.WriteLine("1. Remove a student: ");
            Console.WriteLine("2. Remove a teacher: ");
            Console.WriteLine("3. Go back to the main options page");
            int.TryParse(Console.ReadLine(), out remove);
            while (remove != 1 && remove != 2 && remove != 3)
            {
                Console.WriteLine("Choose:\n1. Remove a student\n2. Remove a teacher");
                Console.WriteLine("3. Go back to the main options page");
                int.TryParse(Console.ReadLine(), out remove);
            }
            if (remove == 1)
            {
                studentsList.ShowAllMembers();
                studentsList.DeleteMember();
                Console.WriteLine("Press any key to continue...\n");
                Console.ReadKey();
            }
            else if (remove == 2)
            {
                teachersList.ShowAllMembers();
                teachersList.DeleteMember();
                Console.WriteLine("Press any key to continue...\n");
                Console.ReadKey();
            }
            else
            {
                Utils.DisplayOption();
                Console.Clear();
            }
        }