Change onclick action for image in NextGEN widget

Hi, I’d like to see to if it’s possible to change the onclick action for an image within the NextGEN widget. Currently, it opens the lightbox viewer, but I’d like it to take the user to a specific page (in my case, a category page with all the images for that category).

Can someone point me to the option for this if there is one? If not, would appreciate some help in how I can manually change this.

Please look at the “Recent Work” section on the homepage at https://tattoos.server319.com/.

Thanks.