ASF Wizard provides you with an organized view of available modules, their documentation links and version information. It allows you to add or remove modules for the selected project. To access ASF Wizard, select ASF Wizard on the ASF menu.

Create an Example Project, select Project -> ASF Wizard from menu item or right click your project in the Solution Explorer and choose ASF Wizard.

or you can just click on the icon of ASF Wizard available on the Atmel Studio toolbar as shown below.