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You can easily change the way the Media Campaign is displayed in the header of the Media Configuration by adapting a feature setting. 

Here is how to

Navigate to the app launcher and open the feature settings Tab. 

• Create/edit a Feature Setting (default added by Postinstall contains the MC name and Advertiser field)

  
  

  Feature Setting Name	Feature Name
  MediaCampaignDisplayFields	MediaConfiguration

  
  

• Add the field paths starting at Media Campaign object (lookup relations with "__r.")
• Avoid blanks and use semicolons to separate.

Example