1. Select the image you want to change the display layout of.
2. Select the Cog icon on the small settings menu. Then choose the desired layout from the Settings option under Image Settings.
You will be shown a 'Layout' drop-down menu (located under the 'Image Settings' heading).
Stretched - Stretched the image to the container borders and does not keep the original image proportions.
Original - Keeps the original size and proportions of the image regardless of the containers borders (Crop the image if it is larger than then container)
Fit - Stretches or shrinks the image to the container borders and keeps the original image proportions.
Cover - The image will cover the entire container while saving the original proportions (May crop the image)
Fit When Bigger - The image will fit the container while smaller than it's original size and will not grow more than its's original size.
Tile - The image will be tiled so that it fills the containers borders.
Tile X - The image will only be be tiled horizontally.
Tile Y - The image will only be tiled vertically.