When using the move tool the duplicate button becomes active on the controller.
Clicking briefly on the duplicate button will place one copy. If you are in duplicate mode and keep holding the duplicate button while moving an array will be made dynamically based on the distance between the original object and the first duplicate. This is a powerful and quick way to make repetitive geometry in the scene such as stacked towers or a row of columns.
Different ways of using the array tool
Stacked array - while moving objects you can easily let Arkio create a stack of cells on top by pressing and holding the duplicate button while moving the controller up.
Position array - while placing a duplicated object (move + duplicate) you can place an object at a second position and keep the duplicate button pressed to continue the array using that distance (+ hosting)
Position and rotation array - while grabbing an object, create a single duplicate and place it at some offset and rotation to the original one, then hold the duplicate button and move your controller in the direction of the array you want to create.