You can add partial payment in Moon POS easily by following the steps below.

1. Open the Moon POS application on your device or tap on this link. 
2. Go to POS ➜ Menu and add an item to the order, and click on Total.
3. Enter the partial amount under Paid by Customer, and the remaining balance will automatically appear as Amount Due.
4. Next, choose your preferred payment method and confirm the payment.
5. In the Orders section, the order will be labeled as Partial.