Select a numerical method to use when evaluating the Fit.
        - 
                In the Specifications step, go to the Specifications tab.
            
- 
                In the work area, Fit Type column, select a numerical method for each output
                    response.
                By default, FAST is selected. 
- Optional: 
                In the Settings tab, change settings as needed.
            
- 
                Click Apply.
                A run matrix is generated using the numerical method you
                    selected. 
Review and edit the run
            matrix in the Edit Data Summary dialog.