Multiple shapes can be aligned either vertically or horizontally to the primary selection (shown enclosed by green selection handles). They can be aligned vertically with respect to either their left edge, right edge or center. Shapes can be aligned horizontally with respect to their top edge, bottom edge, or center. To align, first select multiple objects using the <Shift> key, then use the "Layout/Align" option. Select an alignment scheme from the resulting dialog box.
The "Layout/Distribute" option allows you to distribute three or more shapes in relation to each other. Shapes can be distributed horizontally so that the same space exists between left and right edges of adjacent shapes. Distributing vertically will reposition the shapes so that the same space exists between bottom and top edges of adjacent shapes. Shapes can be distributed uniformly along the circumference of a circle.