To Customize Refine Panel in UI Web Part

1. Add Metadata mapping for column you want to add to refine Panel:
   • Go to Fast Query Service and Select Manage from Control Panel.
   • From Left navigation, select Fast Search Administration.
   • Select Link Manage Properties to manage properties mapping between your metadata and crawled content.
   • You can add or manage property. To allow property to be used for refine panel make sure refiner property is checked.
2. To Add a metadata to Refine Panel:


• From Search Page Edit Refine Panel Web part.
• Form Filter category definition you add/remove columns.
• Make sure use default configuration is unchecked to allow you customize column
  
• Make sure use default configuration is unchecked to allow you customize column.