When a trooper miniature’s base is overlapping a piece of obstacle terrain, it must be completely overlapping that terrain. Trooper miniatures cannot end a movement or be placed in a way that would cause their base to only partially overlap a piece of obstacle terrain and may not have any part of part of its base hanging off the terrain. Trooper miniatures cannot be deployed in a way where any part of their base is only partially overlapping a piece of obstacle terrain.
When placing miniatures on obstacle terrain, a miniature’s base must completely overlap the terrain. Because the 2 Clone Troopers are hanging off the balcony and only partially overlapping the piece of obstacle terrain, they cannot be placed there and must be placed in such a way that their bases completely overlap the obstacle terrain like the other 2 Clone Troopers.