[Koha] Publisher Authority Type

Hi, At the school library where we are setting up Koha, as part of migrating data, we plan to set up a new authority type for Publisher. We would like to import publisher data from an excel into the publisher authority type, then import the biblio with references to these publishers. I am unable to find detail instructions for the same. Could any of you help me with this please ? Also, which are the MARC tags we should use for illustrator, translated by and for editor fields ? Thanks for the support of this forum. -- Regards, Krishna