When an object is being moved a secondary action button will appear on the controller (the button normally used for the Quick Menu). This button can be pressed to make a duplicate of the currently selected object or group of objects.
Once a duplicate has been made you can place another duplicate somewhere else by pressing the duplicate button again.
Duplicates can be made when holding shapes with by laser (great for orthogonally aligned placements)
Or when grabbing a shape with your hands (great for precision placement and rotation to add a “human touch” to the position)
The position and rotation of a first duplicate created from a model will serve as the starting point for creating an Array. (Keep the placement button pressed and move your controller in the direction of the array).