If you need to pause a sale during checkout, you can Save Cart. 

A couple of examples for saving a cart:

• If a customer needs to step away, maybe to grab cash or come back later 
• If a customer calls to order something over the phone, staff can save their cart with their name and notes 

To pick up where you left off with a saved cart:

1. Open the cart via Saved Carts
2. Select Resume Sale

Once the sale is completed, the cart will be removed from the Saved Cart list.