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.
How can I link my personal account to my Enterprise or Teams account?
The "Link Personal Account" is a tool for LastPass users who are part of an Enterprise or Teams system, but want to keep their already existent LastPass account separate. By linking their personal and Enterprise/Teams account, the user's personal account will appear as a shared folder in their Enterprise Account when they login to the Local Vault. You can learn more about the 'LInk Personal Account' tool at Link Personal Accounts.