On the Asset Locations list, there is no possibility to create a new record by 'adding the new row'. New Asset Location can be created only using the button 'New'.
On the Asset Location Card, a new field Parent Location is added. The user can specify which Asset Location is a parent for Asset Location which is currently open.
Using this field - the hierarchy of Asset Locations can be created and it is visible on the Asset Locations list.
Asset Location can be deleted only from its card (it can not be done from the Asset Locations list). Only Asset Locations without children can be deleted.