You can choose one of the following Charge Cycles for each product. The default is Monthly.
Weekly - charged on a weekly basis
Bi-weekly - charged every two weeks
Monthly - charged every month
Bi-monthly - charged every two months
Quarterly - charged four times each year
Semi-Annual - charged twice each year
Annual - charged once each year
Once - charged only one time
None - no products ever charged
If the customer's bill cycle and charge cycle do not agree, it can be more difficult to see how much a customer will be charged on the first and last invoices for that service when a prorating type is assigned to that product.