[Plugin: WordPress NextGen GalleryView] Big Picture clickable

Hello,

I use WordPress 3.1.1 with the plugins NextGen Gallery (v1.7.4) and NextGen Galleryview (v0.5.2). Here is a little preview of it.
I just like to make the bigger (active) picture clickable, so that it opens in the Lightbox.

How can I do this?

http://wordpress.org/extend/plugins/wordpress-nextgen-galleryview/