How do I to post a payment to a Bill?

To post a payment, go to the menu and open the Bills module. Once opened, choose the bill that you would want to post the payment too. Once opened, scroll down to the bottom right of the bill and the click on the Actions drop down. Also you can click on the Action Items Icon (the 3-dot icon) and here you will find the Post Payment option.

Simply choose this option and log the payment. Remember to fill up the mandatory fields.

Click on the Confirm button. At the bottom of the Bill you will see a Payment History chart that will allow you to keep track of partial payments done to your Vendors or Subcontractors.

Also, read the article how do I generate a Bill from a Purchase Order or Subcontract?