Currently the Category does not have range selector. One of solution is you use both Value metric and Category and on the change of range in Value metric, the category metric is also update to show data within that range. How is about that?

In the Value metric you use the actionSelect() to trigger the update of Category metric, and in the Category metric, you get the range of Value metric to query data. Something like this:

class MyValueMetric extends Metric
{
    ...
    protected function actionSelect($request, $response)
    {
        //On the value select, you want to update the Category as well
        $this->sibling("MyCategory")->update();
    }
    ...
}

And here is what inside MyCategory

class MyCategory
{
    protected function dataSource()
    {
        $range = $this->sibling("MyValueMetric")->selectedRange();
        //You will get $range is array of start date and end date ['2021-01-01 00:00:00','2022-01-01 00:00:00']
        //You apply to your query:
        return AutoMaker::table("tableName")->whereBetween("dateColumnName",$range);
    }
}

Hope that helps.