When you open a shoot day, you will automatically see the Unviewed tab open. This view shows you all the images from this shoot day you have not yet seen.  If nothing displays, you may have already viewed them. To see the images again, you can navigate through the Viewed, Killed and All tabs.

Unviewed: images your account has not viewed and which have not been killed by any user.
Viewed: images you have already viewed but which have not been killed by any user.
Killed: images that have been killed by any user.
All: all images together regardless of their viewed or kill status.