How to make a photo gallery
Add a new block and tap on the "Standard" tab. Select the Gallery block and hit 'Apply'. Each Gallery block contains 3 images in a row. You can add several Gallery blocks if you wish.
Note: In your Site Settings (top-right icon), you can adjust the way the gallery images are cropped for the thumbnails.
Watch the tutorial videos:
How to Make a Gallery Page
How to Add Images