I currently have a Power User account and want to allow some friends and family members to choose the photos that we'll use to print a family photo album this year. At first I thought I could just ask them to give a thumbs up on photos they liked. Then I could create a new smart gallery with a rule to include all popular photos from the relevant sets. However I see that the rules are more limited than that, and I cannot filter 'popular' photos from specific galleries. Also, I'm not even sure 'popular' correlates to the thumbs up.
Do I need to upgrade to Pro for this task?