The Order property gets or sets the custom display sequence of values or categories by their zero-based indexes. The property uses a string of comma-separated indexes. Empty entries (,,) preserve positions using the default order.  The data values in the chart are arranged using the following properties:

• Sort, sorts the series values in ascending or descending order
• Reverse, reverses the position of the values as they were added (if no Sort is applied), or reverses the order produced by the Sort property (if Sort is applied)
• Order, repositions values according to their zero-based indexes in a custom sequence

The custom order is cleared when Sort or Reverse is set, leaving the Order property empty. The AllowMoveValue property specifies the key combination that enables users to move or rearrange values within a series, as well as reorder entire series in the chart using drag-and-drop.

For instance, 

• "8", the value at index 8 is placed first
• ",,8", the value at index 8 is placed third
• ",,9,,1", the value at index 9 is placed third, and the value at index 1 is placed fifth
• any value not explicitly listed follows the default order