The Queue Manager UI enables you to edit previously created placement
    rules.
    - 
        In Cloudera Manager, select YARN Queue Manager
            UI.
        
A graphical queue hierarchy is displayed in the Overview
          tab.
       - 
        Go to the Placement Rules tab.
        
A list of placement rules is displayed.
       - 
        In the Action column click on the Edit
            rule icon in the row of the placement rule you want to edit.
        
The Edit Placement Rule dialog box is
          displayed.
       - 
        Edit the placement rule.
      
 - 
        Click Save.