Adding the Block
To add the Gallery block, click the “+” symbol and search for “Gallery”. Then, select the Gallery block icon.
Editing a Gallery Block
Like the Image block, once the Gallery block is opened in the desired location, you can upload your images or select images from the existing Media Library.
Once you have selected your images hit the “Create a new gallery” button in the bottom right corner of the Media Library.
You will then be able to edit your gallery by rearranging the order of your images, or by adding more images. Once you are happy with your gallery, hit “Insert gallery”.
Once the gallery has been inserted into the page, you can adjust the layout of your images by adjusting the number of columns in the block tab of the inspector panel.