This tutorial walks a user through what it takes to setup Google Authenticator and login to OpenVPN Access Server for the first time.
Here are the six steps:
From the Client Web Service screen that displays after a successful login, the user can also choose to change their password. To do this, the admin needs to grant the user permission to do this from the More Settings option for the specific user in the Admin Web UI. The user will then see the button Change Password once they’ve logged in through the browser.