I'm here to walk you through applying invoice payments, @SvetlanaZ.

To apply the payment for a specific job, you'll have to select the job manually on the Receive Payment page. Here's how:

1. Go to the Customers menu.
2. Locate and select the customer you want to receive the payment from.
3. From the Manage Transactions drop-down, click on Receive Payments.
4. Review and put a checkmark on the job you want to apply the payment to.
5. Once done, click on Save & Close.

For more information about handling customer payments, see this: Receive and process payments in QuickBooks Desktop.

Don't hesitate to reply back to this thread if you need further help with this matter or QuickBooks. We're here to back you up. Take care.