Hello there, @Twenty One Hundred.

We're unable to apply a partial payment for certain line items since it will show per total of your invoice. However, you can create and send the invoice one-by-one to your customer. I'll guide you how:

1. Go to the +New button.
2. Under Customer, select Invoice.
3. Choose the customer's name then enter the necessary details.
4. Then, Save and Close.

To receive the payment.

1. Open the invoice you created.
2. Select the Receive Payment button in the upper-right corner.
3. Make sure to put a checkmark next to the invoice number.
4. Click Save and Close.

However, if you want to apply for the partial payment for the invoice you create. You can enter details in the Memo field and input the partial amount in the Payment column.

1. Click the +New icon or open the invoice created.
2. Choose Receive Payment.
3. Enter the customer's name.
4. Select the invoice by putting a checkmark.
5. On the Payment column, enter the partial payment amount (see screenshot).
6. Click Save and close.

The status of the invoice will automatically change to Partial after following the steps given above. To get in-depth information about invoice payment, you can refer to this article: Record customer payment in QuickBooks Online.

I've added these articles that will guide you in recording transactions in QuickBooks:

• Record and make bank deposits in QuickBooks Online
• By recording a Sales Receipt

If you have any other concerns, please leave a comment below. I'll be delighted to help you. Have a nice day!