[Koha] Printing labels for multiple copies

Dear friends: We are beginning to use Koha in our library. We have already tested printing labels with the Dewey call number and everything came out well. However, as in every library, we hold several copies of some of our titles or multiple volumes of one title. In these cases *Koha has returned one label only*, but we would need *a label for each item*, adding a copy number to each call number ( 927.8 L94 c.2) or a volume number to each call number (927.8 L94 v. 2). How do we achieve this? Thanks ahead for your help. Francisco Ralón