Click the
menu item. Scroll to the Admin Layouts section and select the Masonry radio button. Then, in the Publish section, click the button.Masonry tiles come in three different sizes: small, medium, and large. Not all tile types come in all three sizes. For example, the post tile only comes in small or large while the text/image tile comes in small, medium, or large.
It is possible to add 15 masonry tiles to the site. The small and medium sizes have the same width and the large size is as wide as two small or medium tiles.