[Koha] Question about 'Dewey' entry!

I am not a librarian so hopefully someone will correct me - I think that the physical location can be specified/determined from the 'Dewey' entry???

Can someone tell me if this is the right way to do it? -- How to locate the book/CD in the bookshelf when I find them by searching them in Koha web page.? If this is the right way to do it, How can I do it? -- where to input Dewey entry and how to retrieve it? Is this is not the right way to do it, then what is and how to do it? Thanks Yaogeng