Add to Chrome.
Click 'Add extension' above.
The installation process should take less than a minute.
Next, you'll Create an Account.
You might also find your answer in the LastPass Enterprise Manual.
What if I initially order a few licenses, but want to purchase more later?
You are always free to purchase additional LastPass Enterprise/Teams licenses beyond your original purchase. When you order additional licenses, these new licenses are automatically synced to the same expiration date as your original purchase, and you receive a pro-rated price for the difference. This way, all your licenses will always have the same expiration date, and you don't need to worry about renewing at different times.