Markups | Note, Callout, Point Coordinate, Hotspot
Create
	
	In order to create required item, just select type of markup , 
	  then click on 3d object and drag label. In 
	Tool Inspector panel select snapping method: to vertex, object center or 
	pivot point.
Please note that differences between Note, Callout, Point Coordinate, Hotspot are in properties only, so you may change look and behaviour later.
