This document shows to how to make a deposit on an order, then retrieve it days later for final payment.

First: Use this guide to setup the suspend order option.
http://cafecartel.com/kb/doku.php?id=guides:general:suspendorder 

Then to process one of these deposit orders - 

  - Start the order.
  - Press - Payment Screen - or the Split Check button.
  - Make a payment for the deposit.
  - Go back to the order window - then press the Suspend button.
  - The order will then be suspended.

To retrieve the order for final payment

  - Go to Functions
  - Go to 'Suspended Orders'
  - Find the order, select then open. 
  - Make the final payment amount.