Moving or Duplicating Multiple Guides at Once
I'm using Photoshop CC (latest updates): I frequently need to adjust images via cropping, extending the canvas, etc. and I use guides to ensure that the whitespace around the image is consistent. It would be so handy to be able to set a pair of guides on one side of the image, then move or replicate those guides and the space between them to adjust the opposite side of the image. How is this done?

