Pixellu SmartAlbums lets you select layouts for each page/side on your spread. You can view the available single page designs by hovering over your spread and clicking on the left/right arrows over your desired page, or by clicking on the 4-Squared-Icon to open the Template Library:

Note: This option may not support custom templates or layouts that have images crossing the center of the spread. This feature does not support all template options at the moment. 

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