There is possibility customize Zoner using custom fields.
Via child Zoner theme > Add lines form attached file to file functions.php for adding one custom field.
Please, find below example, how to add several custom fields.
if ( ! function_exists( 'zoner_add_to_admin_custom_property_fields' ) ) {
function zoner_add_to_admin_custom_property_fields($fields) {
global $prefix;
$fields[] = array(
'name' => esc_html__( 'Example Field 1', 'zoner' ),
'subname' => esc_html__( 'Edit example field 1.', 'zoner' ),
'id' => $prefix . 'example_field_1',
'type' => 'text_medium'
);
$fields[] = array(
'name' => esc_html__( 'Example Field 2', 'zoner' ),
'subname' => esc_html__( 'Edit example field 2.', 'zoner' ),
'id' => $prefix . 'example_field_2',
'type' => 'text_medium'
);
return $fields;
}
}
add_filter('zoner_admin_property_fields', 'zoner_add_to_admin_custom_property_fields');