Final answer:
The most common technique used by project management software to create a project schedule network diagram is Activity-On-Node (AON), not the others listed.
Step-by-step explanation:
The technique most commonly used by project management software packages to construct a project schedule network diagram is Activity-On-Node (AON). This method is also known as the precedence diagramming method (PDM). In an AON diagram, the nodes represent the activities, and the arrows show the dependencies between these activities. This contrasts with Activity-In-Node (AIN), which is not commonly recognized as a standard approach, and Node-On-Activity (NOA), which is not a standard term in project management network diagrams. Finish-to-Start (FS) is not a diagramming technique itself but a type of dependency between activities within such diagrams.