When browsing in PowerPhotos, you may sometimes find a set of photos you’d like to do something with, such as editing or deleting them. While these operations can’t be done directly in PowerPhotos, what you can do instead is create an album that contains a selection of photos, then open that album in Photos and do whatever you want with them there.
To create an album, first select the photos you’d like to work with in the PowerPhotos photo browser. Then, control-click one of the photos and select “Create Album With Selection” from the menu that comes up. You’ll be prompted to enter a name for the new album, then PowerPhotos will open the library, create the new album, and populate it with the photos you selected.