[Koha] Best way to catalog serials

[Nombre]

Hello all.

I'm starting to catalog some serials we have, some of it are
discontinued, by the moment I'm making a bibliographic record and one
item record for each issue of the serial we have.

Now, I'm not sure if this is the best way and if is better to have a
bibliographic record for each issue.

How do you catalog this kind of serials?

Regards and thanks in advanced