Final answer:
When charging a card in a POS, Allie needs to ensure the POS system is working, insert or swipe the card into the reader, input the sale's amount and details, and then process the payment.
Step-by-step explanation:
When Allie is charging a card in a Point of Sale (POS) system, she needs to follow several steps. First, she has to ensure the POS system is working properly and is connected to the internet. She then inserts or swipes the customer's credit card into the card reader of the POS. The system will then prompt her to input the sale amount and any other necessary transaction details. Once this information has been entered correctly, she presses the button to charge or process the payment, and a receipt is generally printed or sent electronically to the customer. The exact steps Allie has to follow can slightly vary depending on the specific POS system software.
Learn more about POS here.