You can evenly distribute vector objects in relation to each other. For example, distribute three objects so that their top edges are evenly spaced from each other. To distribute objects in relation to the canvas, see Positioning Vector Objects on the Canvas.
To evenly distribute objects:
On the Tools toolbar, choose the Object Selection tool .
Select one object to select it. Press Shift and select the other objects.
Note: You must have three or more objects selected to distribute them in relation to each other.
To distribute objects in relation to each other, on the Tool Options palette click one of the Object Distribution buttons:
Vertical Top , Vertical Center , Vertical Bottom , Horizontal Right , Horizontal Center , or Horizontal Left .
Another way to distribute: With your objects selected, right-click on an object. From the context menu, select a distribution method from Distribute Object.
Grouping and Ungrouping Vector Objects