Link from a photo

On the Photo Albums -> Album admin -> Edit -> Manage Photos admin screen, you can manually enter a link ( and a title if you want to ) near the bottom of the left half of the photo edit box. This link is the Photo Specific link.

In The Photo Albums -> Settings admin page, Table VI, you can tick the box under PSO. This means: Photo Specific link Overrule.
Tick that box on a line in the table where you want to work your specific link. If done so, for the photos where you entered a specific link, this link will overrule the standard link setting.

Thanks for the quick reply. Just not sure which PSO box in Table VI to pick.

From which images you want the link to work? If from the thumbnails, its Table VI-B2