When making a sale through your POS, you can choose to save orders first when customers aren't ready to pay yet by clicking on Save instead of Charge.
To come back to these orders, simply click on Orders at the bottom of the POS.
This takes you to the Orders Page where you can see a list of all your pending orders as well as a list of all your completed orders on the left side.
To access an order, simply select it from this list. Then, you'll be able to either (1) delete the order, (2) edit the items of the order, (3) print a receipt for the order, or (4) checkout.
Deleting the order will do as it says and delete the order from your POS.
Choosing Edit Items will take you back to the POS where you can edit the items of the order.
Printing a Receipt will print a receipt for the order as long as your device is connected to a bluteooth printer.
Finally, choosing Checkout will take you through the regular POS checkout process.