I've got the steps on how to apply the expense as bill payment, @garybrown-blueyo.

 You can change the account to Accounts Payable. This will create an available credit, which you can link to the bill.

Here's how:

1. Open the expense transaction, and go to the Account details section.
2. Change the affected account in the ACCOUNT column to Accounts Payable (A/P).
3. Click Save and close.

Once done, pay your bill and apply the credit.

1. Click +New.
2. Select Pay Bills.
3. Select the bill from the list. You'll see the available credit with this vendor in the Credit Applied field.
   
4. Select Save and close.

To know more about the process, you can check out this article: Manage Vendor Credits.

I'm also linking this article on how to record a vendor credit in different scenarios: Vendor Refunds.

Get back to me if you have other concerns about applying vendor credits. I'll be around to answer them all for you. Keep safe and have a good one.