Navigate to Property Revenues > Utility Billing > Master Programs > Utilities
Search for the Account you want use.
Go the Services program and go to the service you want to use the method for.
Click the Update and tab down to the Multi-Meter Method.
In the Multi-Meter Method select N = P - S with banked KWH, SEC = NO.
Click Accept
Click on the Primary/Secondary button in the lower left of the screen.
Click Add under the secondary meter area to add the secondary meter you want for the account.

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