Change Shape allows you to change a Visio shape to any other Visio shape. This feature can be used to change a shape "on the fly" while working in Visio.
To use this feature, select a shape on a Visio page, right -click and select D-Tools->Shape->Change Shape.
The Change Shape form will open. Choose whatever shape you want and then click [Change]. At the bottom of the form you have the option of assigning this shape as the default shape for the Product/Category/Subcategory if you wish.
In this example I chose the "Line Image" shape:
The shape has now been replaced with the one chosen:
Note: you will need to resize/reposition the shape, and reconnect any wires previously attached to the old shape.