Add to Chrome.
Click 'Add extension' above.
The installation process takes less than minute.
Next, you'll Create an Account.
You might also find your answer in the LastPass Enterprise Manual.
What is Automatic Provisioning?
Users on your domain can be easily provisioned by simply adding a single line (see below) to your Windows login script. When the user logs into a computer on your domain, LastPass will see if this user has an account and auto-provision if this is a new user. Existing users will be automatically logged in upon successful login into your domain.