Cash or Check? Credit Card? Your Phone?

If the customer pays with cash, once you enter the amount necessary you will need to issue them change (unless they pay the exact amount)
The drawer will open and you should place all cash and coins in the appropriate slots within the drawer

If they pay with a check you will need to insert the check into the check scanner where it will authorize and emboss the check as payment
Based on your POS system you will either give the check back to the customer or place it in the drawer
Once the transaction is complete the receipt will print out and based on the customers preference you will either hand it to them directly or place it in the bag