Shift
A Shift is used to roster an employee to an area for a period of time.
An employee can only be rostered to a single area at a time.
The fields are:
| Start Time | The time that the shift starts |
| End Time | The time that the shift ends |
| Duration | The length of the shift |
| Employee | The rostered on user This is restricted to users that work at the practice location. |
| Area | The roster area |
