To add formating, just simply add closure to ->addColumn function
...
public function addColumns(): PowerGridEloquent{
->addColumn('column_name', function (Model $model){
return "Rp".number_format($model->currency_table_name,0,',','.');
})
...
here is my example code
->addColumn('total_harga', function (Penjualan $penjualan){
return "Rp".number_format($penjualan->total_harga,0,',','.');
})