[Koha] acquistion and cataloging

hi all, I'm entering some demo items to the koha comparing with koha's demo page, but some fields are blank for example format, branch, bookfund. I saw this fields are pre completed at koha's demo. is there any field at mysql or will i edit the html files? And another big problem is I could not edit "Itemtype | Class Location | Date | Due | Last | Seen | Barcode" aereas yet. I wonder is it because of I do not enter any barcode number to the records yet? But when I want to enter any (not standard) number at barcode section in acqui, koha doesn't record them. thanks for helps again. best regards Zeki Celikbas