private void PickTwo()
        {
            var nextShifts = _schedule.Shifts.Where(s => s.Engineer == null).OrderBy(s => s.Position).Take(2).ToList();

            var rnd = new Random();
            List <IEngineer> availableEngineers = new List <IEngineer>();

            availableEngineers = _workforce.Engineers.Where(e => e.CanWork(nextShifts[0])).ToList();
            var firstEngineer = availableEngineers[rnd.Next(availableEngineers.Count)];

            _schedule.AddEngineerToShift(nextShifts[0], firstEngineer);

            availableEngineers = _workforce.Engineers.Where(e => e.CanWork(nextShifts[0])).ToList();
            var secondEngineer = availableEngineers[rnd.Next(availableEngineers.Count)];

            _schedule.AddEngineerToShift(nextShifts[1], secondEngineer);
        }