Group Similar Photos Together (Stacking)?

To stack a bunch of similar photos under one single thumbnail (helpful if you have multiple bracketed exposures for HDR, or for organizing the frames you want to merge together for a pano), in the Library module, select the images you want to stack (here, I’ve selected nine bracketed images of the same exact scene), then Right-click on any of those selected thumbnails and, from the menu that appears, under Stacking, choose Group into Stack, as shown above. Now those nine images all appear stacked under just one thumbnail image (see the little white box with a 9 in the upper-left corner above, on the right? That’s letting you know that the thumbnail represents nine similar images). To expand the stack, click once on that little number (in this case, the number 9). To collapse the stack, just click on it again.