Hi there, Michelle. 

I wanted to join this thread to clarify my peer's statement regarding the AP Aging Report in QuickBooks Online (QBO).

Generally, the Payment Method is available for all reports but only applies to certain transaction types. When my colleague, @Shania_C, mentions the stage of processing payments, she is referring to collecting receivable amounts and recording sales transactions.

Since the payment method is not required when recording bill payments, this is why it does not appear in the designated column of the AP Aging Report. 

In the future, we can note the form of payment used in the Memo field when recording transactions. This will allow us to customize your report to display this column, helping us identify the process used to pay specific transactions. I recommend using the classic view when implementing my suggestions above to ensure the Memo/Description field is visible.

Here's how you can customize and add the field:

1. In the A/P Aging Report window, click the Switch to Classic View option.
   
2. Click the Customize button.
3. Check the Memo/Description column and click Run Report.
   

Additionally, you can export your reports to obtain a copy or use them outside of QuickBooks. You can find the complete guidelines in this article: Export your reports to Excel from QuickBooks Online.

Let me know if you need further assistance managing your reports or transactions from your company file, Michelle. I'm always here to help. Have a good one!