Hello Brett,

In order to add sorting and filtering feature in the Kendo UI Grid, set the sortable and filterable property to true. To filter the data by a date range, you can add the less than and the greater than operator for the date column. For example:

$("#grid").kendoGrid({
  sortable: true,
  filterable: {
    operators: {
      date: {
        gt: "After",
        lt: "Before"
      }
    }
  }
});

Please take a look at the attached zip file where the Kendo UI Grid is extracting data from a local JSON file and performing sort and filter operations.

To see the file running without any CORS error, use the http-server as seen in this screen recording.

Please let me know if this helps or if I can further assist you.

Regards,
Hetali
Progress Telerik