Staff Scheduling Plugin

Hello,
I’m wondering if there is a plugin that offers the following features:

1. Admin can create shifts for a set period of time but not assign them.
2. Employees can request shifts by clicking on the checkbox next to a shift.
3. Admin assigns requested shifts, and/or other shifts.
4. When schedule is complete, the employee receives an email.
5. Employees can log in to see their schedule and click on assignments.
6. Assignments will have info, along with location, map, etc.