Next image link in Slimbox?

klw81

I'm using Slimbox on the default theme. How do I make the next image link show up like in the demo on the Slimbox site? I checked their site and it says this:

"For sets of related images that you want to group and make navigable, add a group name to the rel attribute after “lightbox”, for example inside square brackets:
`image #1

image #2

image #3`"

How would I do that in Zenphoto, if it's even possible?

klw81

Anybody have an idea?