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This tab contains discounting parameters for calculation of values such as NPV, and other settings. Discount rates are specified in the formulas when calculated variables are created in the Formula Editor.

Field	Description
Discount Start Date	Discount start date.
Discount Method	Discount method.
Display Decimal Places	Number of decimal places in working interest and POS values.
P10, P90 Setting	Indicates whether S-Curve or Inverted S-Curve is used.
Shift Setting	Indicates whether daily or monthly shifting is used.
Default Range Settings	Specifies the maximum and minimum values for shift, working interest and probability of success.

PLAN calculates the effect of daily shifting through pro-ration of monthly data. This allows the impact of daily shift adjustments to be seen in the context of the portfolio. Note that the calculated values remain in monthly granularity even when using daily shifting. Please be aware of these considerations when using daily shifting:

• The minimum granularity for optimizers (GA and LP) and random portfolio generation is Monthly.
• The Gantt chart displays project dates and markers at the monthly scale.
• Daily shifting requires addition calculation, which may increase processing time of some functions.