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Scheduler

A scheduler is someone who has the ability to add, modify and delete schedules on the schedule type they are assigned. 

A scheduler can also:

1.  Access the Your Current Schedules panel on the dashboard

2.  Access the Employee Shift panel on the dashboard

3.  Access the Shift Board icon on the dashboard

Shift Editor

Shift Editor is one level down from schedulers.  A shift editor can modify (based on the shift editor constraints settings) shifts on the employee shift panel and the shift board.  The shift editor cannot modify schedules.

Viewer

A viewer can view schedules but has no ability to modify schedules.