Tariff Transformation
Wholesale tariffs can be transformed to user retail tariffs. This can be done in the main tariffs window by clicking on 
Make user retail tariff or Make wholesale Tariff (these links appear when a tariff has at least one rate):
Enter the values you want to add to change from a wholesale tariff to a retail tariff. Let's say X is the wholesale rate. There are three possible ways of making the change:
1. Enter value Y into the Add amount field. The retail rate will be X + Y.
2. Enter value Z into the Add percent field. The retail rate will be X + (X/100 * Z).
3. Enter value Y into the Add amount field AND Z into Add percent field. The retail rate will be (X + Y) + ((X + Y) / 100 * Z).
NOTE: When performing this transformation, the largest value from the wholesale tariff is taken for the Destination group in the retail tariff (by prefix). For a more detailed explanation, check here.
HINT: This function can be used when importing a user retail tariff. First you create a fake wholesale Tariff, then import Rates into it, and finally transform to the user retail Tariff with values 0/0.
