[Koha] output of authors' subfields

Hello! How to do if 7xx $g and $b are filled, output only $g? Both subfields are being displayed now. Is this reaction only in Unimarc? Example: 700 $aAufderstraße $bH. $gHartmut https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667189 https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=22141 https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=634386 Good Luck! Igor A. Sychev Tomsk Polytechnic University https://lib.tpu.ru