After you check "Section Footer" checkbox (not radio button) Collection Reusable View item should appear inside Collection View hierarchy which is in the left panel. Now I am not seeing it at all in your panel. Something is wrong with your collection or your Xcode. For example in my XCode 7.2, when I check both header and footer checkboxes, collection view hierarchy looks like this:
Try to update your Xcode or create new storyboard file.
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