Summary
In a scenario where you service a customer more than once a month but want to invoice just once, follow these guidelines:
Key Points
Set up the services, all as a series
Service 1: set up the billing frequency as "Monthly"
Service 2: set up the billing frequency as "No Invoice"
Service 3: set up the billing frequency as "No Invoice"
Service 4: ...
The total for the Work Order that has the billing frequency as Monthly should contain the total amount of all the Work Orders.