If you want to add a shape, select the shape you want to add the new shape under or next to, click the arrow on the Insert Shape button on the Organization Chart toolbar, and then click one or more of the following:
Coworker— to place the shape next to the selected shape and connect it to the same superior shape.
Subordinate— to place the new shape below and connect it to the selected shape.
Assistant— to place the new shape below the selected shape with an elbow connector.