Use the Effort Estimation tab of the Project Options window to specify the file types included in the effort estimation calculation
               and the complexity metrics for each type. These options also control the percentage factor for the change magnitudes used
               in the calculation. 
               	 
            
 
            	 
            
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                  		  Choose 
                     			 Options > Project Options. The Project Options window opens. Click the Effort Estimation tab. 
                     		   
                  		
               
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                  		  In the Factors pane, select each source file type you want to include in the calculation. 
                     		   
                  		
               
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                  		  For each source file type selected in the Factors pane, click 
                     			 Attributes to edit the complexity metrics used in the calculation. 
                     		   
                  		
               
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                  		  In the Attributes window, select each complexity metric you want to use in the calculation, then enter its weight in the 
                     			 Weighting Factor field. For example, if you want Cyclomatic Complexity to have twice the weight of Conditional Complexity, set the weighting
                     factor for Cyclomatic Complexity to 2 and the weighting factor for Conditional Complexity to 1. 
                     		   
                  		
               
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                  		  To set the percentage factor for the change magnitudes used in the calculation, enter the percentage you want to be applied
                     in the combo box for each change magnitude.