[Koha] problem to set advance pattern in serial subscription

hi all i have a journal which has frequencies by month pattern is "volume, issue". after received 6 issue volume should change but issue continue like exp. vol1 issue1 vol1 issue2 vol1 issue3 vol1 issue4 vol1 issue5 vol1 issue6 vol2 issue7 vol2 issue8 vol3 issue9 please tell me how to set frequencies in koha for journals. thanks in advanced