Hi, and yes, when you want add a pic you go to media bottom in a page or a post. So I did it. And yes when you choose media you have three option that are the following,
1. Insert Media, with that option you only add a picture, video or audio in your page, and of course you can link this image with a page.
2 create Gallery, with that option you can add a image with fade in, that I have, and you have multiples options there, like add 3, 4 etc. write a caption for the image but it hasn't link each image with a page.
3 set feature image, that option is for the circles.
And finally No I don't know a site that does that I want with this theme, if I knew one i probably could figure out scratching the code.
I know that the gallery function is a Shortcode, but I am pretty knew I have some problems trying to make a Shortcode function.