The AWM plug-in extension templates can be selected when creating a plug-in project. See Creating a Plug-in Project for more information.
Selecting an AWM plug-in extension template will create a complete, executable plug-in project in combination with a model in the project's model folder which can be used to test the AWM plug-in extension template.
Follow the steps in Creating an AWM Plug-in Project.
This takes you to the Templates stage in the New Plug-in Project dialog box.