can I make the images on the well template homepage click into hidden pages?

I'm using the Wells template with the image gallery as the homepage. I want to make each image a click through or (linked page) to a hidden page not displayed on the navigation.

I've gone through: image settings >options>clickthrough>green>save 

Then after I still continue to get the light-box of image (3rd at bottom of attachment)

I've included an image with my issue below. So how can I make the images on the well template homepage click into hidden pages? I would appreciate any help.

Thank you.