> ## Documentation Index > Fetch the complete documentation index at: https://docs.fire.rest/llms.txt > Use this file to discover all available pages before exploring further. # Sell and charge > Build the order, charge it in one or several payments, and let the POS work out the change. At the counter, the most expensive mistake is not taking an order wrong: it is giving the wrong change. That is why the POS separates **charging** from **finishing**. Each payment you receive is a charge —you can take several, in cash or with other methods— and the POS works out the change from what the customer handed you. The sale is only recorded when you tap **Finish sale**. **The minimum you need to know** * The sale is recorded when you tap **Finish sale**, not before. * Each charge is listed in **Charges on this account** and can be **voided** before you finish. * For cash, tap the bills the customer gave you: the POS works out the change. ## Prerequisites * The register is open. See [Open the register](/en/manuals/pos/open-register). ## 1. Build the order At the top, choose the service type: **Dine in** or **Takeaway**. Categories are on the left and products in the center: tap a product to add it to the order. Sales screen with one product in the order, the categories and the products The order, on the left, shows the products with their options, the total, and the **Clear** and **Charge** buttons. **Identify customer** loads the customer's details for the invoice: see [Customer and billing details](/en/manuals/pos/customer-invoice). ## 2. Take several orders at once The **+** button at the top opens another order in a new tab. Use it to take the next customer's order while the previous one looks for a way to pay. Tap a tab to go back to that order. Order tabs #1 and #2 with the button to open another one The store decides how many tabs can be open: see [Store configuration](/en/manuals/pos/store-config). ## 3. Open the charge screen Tap **Charge**. The charge screen shows the **Remaining to charge** and the store's payment methods. Charge screen with the remaining amount to charge and the payment methods At the top are **Buzzer**, **Billing details** and **Split the bill**. To split the bill among several people, see [Split the bill](/en/manuals/pos/split-bill). ## 4. Enter the buzzer If the store hands out buzzers, tap **Buzzer**, type the number of the one you gave the customer, and tap **Save**. If the store requires it, you cannot finish the sale without it. Buzzer number window with the number 12 ## 5. Charge in cash Tap **Cash**. The drawer opens and **Charge with Cash** appears, with the amount already set to the remaining balance. There are two ways to charge: * **All at once**: tap the bills and coins the customer gave you. The POS shows how much you are receiving and how much change to give. * **In parts**: use **C** to clear the amount and type how much you are charging in this payment. The POS tells you how much will be left to charge. Cash charge of $ 10,000 with the notice of what is left to charge Tap **Charge**. The charge appears in **Charges on this account** and the remaining balance goes down. For the rest, tap **Cash** again: the amount already comes with what is missing. Second cash charge with a $ 20,000 bill and $ 8,100 change to return **Exact** loads exactly the remaining balance, for when the customer pays with no change. ## 6. Finish the sale When there is nothing left to charge, **Account covered** appears at the top and **Finish sale** becomes active. Check the charges and the **Change given**. Account covered with two cash charges, the change given and the Finish sale button Tap **Finish sale**. The POS records the sale, prints the receipt if there is a printer, and shows **Order paid** with the **Change to return**, the products and the charges. Order paid window with the change to return, the products, the total and the charges Hand over the change and tap **Done**. **Reprint** prints the receipt again. If you saw **Order paid** and handed over the change, you are done: the POS is ready for the next order. *** ## Void a charge If you entered the wrong amount or the customer wants to pay another way, void the charge before finishing: tap **Void** on the charge and confirm with **Void charge**. The amount goes back to the remaining balance and the charge is recorded as voided. Confirmation to void a $ 10,000 charge If the charge was in cash, the drawer opens: give the money back to the customer. ## Recipes 1. Tap **Cash**. 2. Tap the bill the customer gave you. 3. Check the change the POS shows and tap **Charge**. 4. Tap **Finish sale** and hand over the **Change to return**. 1. Tap **Cash**, clear the amount with **C** and type the first part. 2. Tap **Charge**. 3. Tap the method again for the rest: the amount already comes with what is missing. 4. When **Account covered** appears, tap **Finish sale**. 1. Tap **Void** on the charge and confirm. 2. If it was cash, give the money back. 3. Charge with the new method. 1. Tap **+** to open another order. 2. Take the new order. 3. Tap the first order's tab to charge it when the customer is ready. ## Mistakes that cost money **Working out the change in your head.** If the customer pays with a larger bill and you tap **Exact**, the POS does not know how much you received and does not show you the change. Tap the bills you were given: the POS does the math. **Voiding a cash charge without giving the money back.** The charge is voided but the money stays in the drawer, and at closing it shows up as a surplus. When you void, give back what you charged. ## Frequently asked questions The order is empty. Add at least one product. The screen shows only the methods enabled for the store. If one is missing, ask the manager to check it. Check that the Fire Agent is open and the printer is set up, and tap **Reprint** in **Order paid**. There is still something left to charge, or the store requires a buzzer and you did not enter it.