Mass enrolling of chromebooks -

I know I've seen it somewhere, and heard about ways to do it...I just can't find any of them.

Is there a way to use a spreadsheet to enroll AND move chromebooks to a specific OU? Or at least to mass-enroll them? I've got several of my techs doing this on a one-by-one basis, and it's driving me crazy at how inefficient it is.
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