Locate this folder: 

At startup, if a Microsoft Teams Rooms console finds an XML file named SkypeSettings.xml located at C:\Users\Skype\AppData\Local\Packages\Microsoft.SkypeRoomSystem_8wekyb3d8bbwe\LocalState, it applies the configuration settings indicated by the XML file then deletes the XML file.

To change the screen Scaling for dual monitors: 

Changing the values will change resolution and scaling.
 

<SkypeSettings>
  <EnableResolutionAndScalingSetting>true</EnableResolutionAndScalingSetting> 
  <MainFoRDisplay>   
  <MainFoRDisplayResolution>1920,1080</MainFoRDisplayResolution>   
  <MainFoRDisplayScaling>100</MainFoRDisplayScaling> 
  </MainFoRDisplay> 
  <ExtendedFoRDisplay> 
  <ExtendedFoRDisplayResolution>1920,1080</ExtendedFoRDisplayResolution>   
  <ExtendedFoRDisplayScaling>100</ExtendedFoRDisplayScaling> 
  </ExtendedFoRDisplay> 
</SkypeSettings>