This How To video demonstrates updating a customers base fee log for a recurring service set. From the Home level of the customers account you click the Rate Log tag, click Update Base Fee and enter the new amount needed to be charged.
PRO TIP -- If you do not want the effective date to change, be sure to edit the date to match the existing base fee log effective date. This will then override what was originally entered and only update the base fee. EX. In this video we would have changed our effective date to 09/01/2020 to replace the existing rate log.