overriding these lines: author2 = custom, getAuthorsFilteredByRelator(700abcd,700,secondAuthorRoles) author2_variant = custom, getAuthorInitialsFilteredByRelator(700a,700,secondAuthorRoles) author2_fuller = custom, getAuthorsFilteredByRelator(700q,700,secondAuthorRoles) author2_role = custom, getRelatorsFilteredByRelator(700abcd,700,secondAuthorRoles) with these lines in your marc_local.properties: author2 = custom, getAuthorsFilteredByRelator(100abcd:700abcd,700,secondAuthorRoles) author2_variant = custom, getAuthorInitialsFilteredByRelator(100a:700a,700,secondAuthorRoles) author2_fuller = custom, getAuthorsFilteredByRelator(100q:700q,700,secondAuthorRoles) author2_role = custom, getRelatorsFilteredByRelator(100abcd:700abcd,700,secondAuthorRoles)