### Calculations for the Services Provided

The scheme of pre-pay for services provided is implemented within the Parallels Business Automation - Standard. However, you can provide services on credit as well. To this effect, make the relevant changes to the Billing Manager - Payments Processing. In the case of resource overusage (i.e., a subscriber exceeds the quote of paid resources stated by Subscription) the Invoice for overusage cost is being generated within the system. Only the resources marked as Billable and (at the same time) Metered are taken into account during Invoice generation.

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