Costing updation in production order

Planned cost is caculated if you click 'cost calculation' in production order. GI go production order will update actual material cost. Confirmation of production order will update actual activity cost. You can settle cost once production order has status TECO or DLV. From PP side, the transction is CO02
In IMG we can define that when we calcu. the planned cost.
There are 3 ways. - Determine planned costs when saving, - Do not determine planned costs when saving, - Determine planned costs when saving if released.
But the actual cost is posted when we draw the material, when we confirm the order......We can use co02 and click the calcu. cost to update the cost in the prd order.