Timely Question. I am working on a Hub and doing this. When you open a photo capsule to edit, in the upper left corner (below "Capsule Subtitle") is a pull down menu for "Display Style". The default is "No Border" Pull down options include "Border" and "Thumbnail" Chose "Thumbnail". You can add up to 20 pictures. The text also tells you how to add more than one photo to the capsule at once. I found that useful also. I have attached a screen shot so that you can see what I am talking about. I am also learning how to do screen shots with a Mac that I also plan to write a Hub about. Unfortunately, I may have to work on sizing.