If you want to remove assignments from multiple shifts, there is a quick and easy way to do this.
First mark all layers from which you want to remove the assignment.
Our hotkeys make this step especially easy:
- select multiple shifts: cmd + alt + mouse click on the desired shifts
- select whole day: cmd + alt + mouse click on the desired day
- select all layers: cmd + alt + A
To remove the assignments, with the shifts still selected, click on the x in the circle on the left above the duty roster.
The selected shifts are now unassigned.