Copying and applying a crop to images

Select the image that you want to copy the adjustment from in the browser. The thumbnail will have a thick white border then.
Now select the image thumbnails that you want to apply the adjustment to. The thumbnail(s) will have a thin white border in the browser.
Make sure the Bearbeite alle ausgewählten Varianten is selected in the toolbar or from the Bild menu.
Press the small double-ended arrow icon. A dialog box will appear.
Press Anwenden at the bottom of the dialog box. The adjustment will be applied to the selected images.