OrCAD Layout completed the End Of Life process by the 16.3 release so it was no longer shipped on the media. 16.2 was the last media version that included an OrCAD Layout install. OrCAD PCB Editor, based on the Allegro PCB Editor, replaces OrCAD Layout. You can translate OrCAD Layout designs and libraries to use with OrCAD PCB Editor if required. Take a look at the Flow Tutorial in the doc\flowtut directory of the installation for some initial information.