Collection Help

I think you can do this via Calibre.  But as far as I know, collections are more like a tag on a book; a book can be in more than one collection, so there's not a physical location as such.  I think in Calbre you can designate which collection the book is going to be in before you send it to your Kindle; apparently setting the "tag" before you copy it.  One of our Calibre power users may be able to tell you more.

Betsy

If the book in question is already 'collected' on a different device, just import the collections from that other device and books will automatically go where they belong.  Of course, brand new books still need to be 'collected'.