\koolreport\apexcharts\TimeLineChart::create(array(
    "dataSource" => $data,
    "columns" => [
        'name' => [
            'seriesGroup' => true,
        ],
        'position',
        'term' => [
            'combination' => [
                'date_start',
                'date_end',
            ],
            'label' => '',
        ],
    ]
));

$data2 = \koolreport\apexcharts\Chart::rowsToColumns($data, [
    'rowColumns' => ['name'],
    'valueColumns' => ['date_start', 'date_end'],
    'fixedColumns' => ['position']
]);

\koolreport\apexcharts\TimeLineChart::create(array(
    "dataSource" => $data2,
    "columns" => [
        'position',
        'George Washington' => [
            'combination' => [
                'George Washington__date_start',
                'George Washington__date_end'
            ]
        ],
        'Thomas Jefferson' => [
            'combination' => [
                'Thomas Jefferson__date_start',
                'Thomas Jefferson__date_end'
            ]
        ],
        'John Adams' => [
            'combination' => [
                'John Adams__date_start',
                'John Adams__date_end'
            ]
        ],
        ...
    ]
));