Sorting values in Lookup field besides Alphabetic order

If this is for a classic page, you can sort the lookup, but the below method only works for dropdown list lookups, not sure how to sort a lookup that pop open the dialog (although I assume that is possible):

// add an attribute with the same name as your lookup column
// specify "orders" for which column to sort by  
attributes: {
  "UsrTestLookup1": {
        lookupListConfig: {
            orders: [
                {
                    columnPath: "UsrSorting",
                    direction: Terrasoft.OrderDirection.DESC
                }
            ]
        }
    }
}

If this is a Freedom UI page, not sure, but I don't think you're able to do that yet.

Ryan