I make it clearer:
In my post, i’ve got two pics:
one to illustrate my intro a the beginning of my post.
one to illustrate the chapter 2 somewhere in the middle of the post.
Those two pictures are in the same gallery.
I’m using the singlepic shortcode to insert those pics. When i click on one of those pics, i got only the picture on which i clicked.
I’d like to be able to navigate through my gallery when i click on one of those pics. But i need to keep those two pictures separate, just like two single pictures.
How can i do this ? Thank you for your help.