Hello @magati ,
The section that displays images is the Portfolio Section . You can manage the section by going to Admin panel > Appearance > Customize > Home Page Sections > Portfolio . As for the gallery you can view the gallery by clicking in pink icon that appear at the middle of the image when hovering upon the image .
Screen shot :
https://image.prntscr.com/image/G6ea3IkZRPi7W-3MUNMDsQ.png
Also if you want to turn the link off when clicked in the image please use below given CSS.
.portfolio-thumb a {
pointer-events: none;
}
Hope this helps .
Best Regards!!