The main feature of a point of sale is to make sales in stores. It is the type of sale where the customer goes to the cashier with their products and pays for them.
First, open your mobile app. You can view a list of your previously added products.

You can see all your added items on your phone screen.

Long pressing on a product will also update its quantity. A popup window appears on your mobile screen.

Just type the quantity in the textbox, then tap the Apply button. As you can see, the quantity will automatically update.
To search for products, tap the Search icon from the top right side of your mobile screen. A search bar will appear on your mobile screen.

Type your desired product name in the textbox, and then you can see your product appear on your screen.
You can see your total cart amount and total item count in the footer section on the left. On the right side, you can see the Next button. Tap the Next button.

To proceed to the Payment page, click the Next button.

On this page, you can input your customer receivable amount. The total cart amount is automatically filled in the textbox by default.
If your customer wants partial payment, just type the amount in the textbox, and the system will automatically generate a partial payment receipt for this sale. Tap the Next button to select a customer for this sale.
You can see a list of your customers that you previously created. To select a customer, just tap on any row. By clicking the plus button on the right bottom side of your mobile screen, you can add new customers.

Customer selection is optional. You can skip the customer selection part by clicking the Next button. If you don't select a customer, the system will treat this sale as an anonymous invoice.
Tap Next button to final checkout.
Now, you can see your sales details at a glance.

On this page's footer, you can see three buttons.