Follow these steps to create a supply planning policy assignment set and associate it
        with a segment group:
        - 
                On the Tasks panel tab, under Plan Inputs, click Manage Supply
                        Planning Policy Assignment Sets.
                The Manage Supply Planning Policy Assignment Sets page opens. 
- 
                In the Search Results section, on the toolbar, click the
                        Create icon.
                The Create Supply Planning Policy Assignment Set dialog box opens. 
- 
                Enter the name and description of the policy assignment set.
            
- 
                In Segment Group, select the segment group to which the
                    policy assignment set should be attached.
                Only those segment groups for which the segmentation process has been
                    successfully run are available for selection.  
- 
                Click the Add Row icon.
            
- 
                Select a Segment.
            
- 
                Enter a value in Service Level Percentage. You must
                    enter a percentage between 0 and 100.
            
- 
                Click Save and Close.