Hello there, @mary94.
You can add ACH or EFT in the Check no. field when creating a check. Let's ensure to uncheck the Print later box so you can enter the info.
Then, add the information in the Starting check no. when paying the bill. Ensure to uncheck the Print later box as well.
When you pull up a report, like Transaction List by Date, you will see ACH or EFT under the Num column.
If you have additional questions, please don't hesitate to leave a comment below.