Shifts can only be deleted for each staff member individually, not for multiple people at a time.

1. Go to the  Shifts and Staff tab and open the  Shift planner.
2. Right-click on a shift and select   Delete.
3. Alternatively, double-click on the shift to open the input window and select   Delete in the toolbar.
4. Delete multiple shifts for one staff member by going to that   Staff member and clicking on their   Shifts tab. Select the shifts you want by left-click (press Ctrl-key for multi-select) and click on   Delete in the toolbar.