Deleting
Deleting a recurring assignment erases all future instances of the assignment, and changes past ones into non-recurring assignments. If you've entered an assignment incorrectly, deleting it is the best course of action. To delete the assignment, right-click on it and select Delete.
Canceling all
Canceling the recurring assignment cancels all future assignments within it, and does not affect past ones. To cancel the assignment select the Cancel all link.
Cancel for time period
Cancel for time period will ask you for dates to cancel between.
Cancelling a single assignment (or shift)
To cancel a single assignment, right-click on the assignment and select Change Status. Select the reason for cancellation.