The Geodesign Hub platform enables designs to be analyzed in 3D. This is however done on a system by system basis and a system can be set to not process 3D impacts. By default, 3D relations are turned off for all systems and they have to be turned on.
In the “Manage Systems” link, Click on the 3D relations link.
Click on Enable or Disable 3D features for the system. Enabling this enables you to specify if a feature is under ground or above ground.