The prepaidcode rate is not using the same configuration as manual usage rate. Separate configuration have to be done.
It will calculate itself without the staff inteference.
It only support flat rate, decrease the prepaidcode's balance by time.
Using the prepaidcode table rate, it is possible to have more than one prepaidcode rate.

To Configure PrepaidCode Usage Rate :
1. Open the Usage rate window; side panel > setting > usage rate > PrepaidCode Rate
2. In the "Normal Rate" partition, type in the price per hour's box the prepaidcode usage rate.
3. Click "Update".
4. If you want to use multiple rates, select the day, time, insert usage rate and click Add button beside the table.
5. And the prepaidcode feature is ready to be use.

Shown below is a Usage Rate window for CCAutoServer latest version which is not released yet.

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