From USAGE you can check where the app is used: on which displays and on what flows. 
You have also access to the flows and displays from this tab.


  Displays

  Here you have access to every display where you can edit display's contents.    


  Flows

  Here you have access to the flows where the app is assigned. 


Please check also INFORMATIONACTIONS and HELP


CONFIGURATION is source dependendent. Please check source specific guides for configuration. 

Use the app's source as your search word, e.g. Facebook, or Power BI.