Canon MF6180dw Manual page 464

Creating multiple cropping frames (only when using the platen glass)
You can create multiple cropping frames.
1
Display the preview.
2
Click [ ] (Crop) on the toolbar.
3
Click on the preview image and drag over the areas you wish to select.
4
Click the outside of the existing cropping frames and drag over the area you wish to add.
NOTE
The number of cropping frames that can be specified
Up to 10 cropping frames can be specified.
5
Adjust the cropping frames as needed.
Click to select the cropping frames you want to adjust.
Deleting cropping frames
To delete a cropping frame, select the frame, and perform any one of the following.
Click [Delete] on the keyboard.
Click [ ] (Remove Cropping Frame) on the toolbar.
Right-click on the cropped area and select [Delete].
Hold down [Ctrl] on the keyboard, right-click outside the cropped area, and select [Delete].