To add a space between objects, first select "Edit Page" across the top and make sure you on the spread you wish to edit.
Then select three or more items to space objects. To select multiple items on Windows, hold the control key while clicking items. To select multiple items on a Mac, hold the command key while clicking items.
Once the items are selected, a black bar will appear across the bottom of the design. Clicking the center button will give you the option to space your images evenly horizontally or vertically.
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