How to link any gallery created to any image on page or post

Hi,
in fact, it is possible to do, but is not explained clearly in any site.
Can you do it please?

This question is discussed here:
https://www.ads-software.com/support/topic/plugin-nextgen-gallery-single-images-to-slideshow?replies=5#post-3983999

try to install nextgen gallery custom field
https://www.ads-software.com/extend/plugins/nextgen-gallery-custom-fields/

Hi,
I think this can’t solve this question, I don’t need more fields in the gallery, but I need to link any image on any page/post to open any gallery in lightbox (slideshow mode).