The Photo Gallery allows you to create an organized group of clickable thumbnails that can be individually selected to view the respective photo in detail.
To add a Photo Gallery, navigate to an Unused Area on your site and click the + Add button in the top left.
Select Photo Gallery in Standard Areas and click Save at the bottom of the page.
Click Add Images.
Navigate to the photos you want to display in the Photo Gallery.
Select the photos you would like displayed in your gallery, then click the green submit button.
(For information on how to upload photos, click this link here.)
Click the save button at the bottom of the page.