The Cost Period Detail dialog shows the Start and End dates/times for the cost period and the name of the cost period selected. You can edit the name to one of your own choosing. This is useful in cases where you wish the cost periods to be called Spring, Summer, Fall, and Winter, for example, rather than Quarter1, Quarter2, etc. Click the OK button to alter the cost period name or the Cancel button to discard your changes.
The Start and End dates are calculated by SIMPROCESS from the Start and End dates entered in Run Settings and the Period Frequency of the Cost Periods.