I supervised over 100 college students for evening and weekend events for over 4 years. We used When to Work which basically uses a computer to schedule people when they say they CAN work. You enter shift times, and it schedules people. If they set their availability wrong they are responsible for the shift. If an emergency comes up, we use the system to find a sub. It is so easy, and solves so many issues. I just don't understand why so many of you still deal with manual scheduling that can become problematic with lazy managers that don't think ahead.