You can use the 3D grid to position the annotations of an annotation view.
See also Display settings.
Select the annotation.
Click Display 3D Grid .
The 3D grid appears.
Drag the annotation anywhere.
When Snap to Point is deactivated , the annotation may be moved without any connection to the grid.
Click Snap to Point .
Drag anywhere the annotation.
The annotation snaps to each point of the grid according to its anchor point.
You may temporarily reverse the Snap to Point status pressing the Shift key.