In classic Web UI it was possible to add an icon depicting the hierarchy chart of a customer asset structure. This way it was pretty obvious for a user to see if a customer asset had sub-assets and could be viewed in a hierarchy. In the new UI, the hierarchy is still available, but the icon indicating is not present neither can it be added to the grid view. In ribbon bar button 'View Hierarchy' becomes available when selecting a parent or master asset, but it is a wild guess to find one. We be great of the icon on record level could be enabled again (everywhere hierarchy is available) https://docs.microsoft.com/en-us/dynamics365/customer-engagement/customize/query-visualize-hierarchical-data