After downloading and running the installer (to get the installer, visit the facebook page an click the "use app" button, or use the link in the end of this post) will appear a new option in the windows explorer toolbars, like the image below. Just select the "Ev Plugin for Windows" option:
You should see a new element in the windows bar (as shown in the following image):
2º Rigth click on the evplugIn bar, and go to Preferences, fill the Electric Vehicle information menu with the same information used in the android or iOS app.
3º Lastly, go to the registration tab and register the plugIn using a valid email account (you will receive an email with the activation link):
To check the last updates and more information visit the Facebook page.