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I  want to create sub headings/categories in a collection.  What I want to do is in the Collection of Interchangeable Tile I want to have sub headings/categories like: Christmas, Valentine's day, summer, etc.  How do I do this?  Is it even possible.
Am I able to use my Iphone as a barcode scanner for check out which I am  using a I Pad for my pop up shops?
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