Checking Show Sorting displays a dropdown underneath the Filters (if used). The label is on the left and the dropdown on the right.
Enabled options are listed in the sorting box. Drag and drop to change the order. Check the box to reset the sort.
The labels below the sorting box are those that will appear in the dropdown. See it in action.
If fees are enabled the Fees Label will replace the Loan Amount Label.
If you want the sorting option you need to Upgrade to Premium.