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 do I share Folders?
To create a new shared folder, go to the Vault > Sharing Center > click on the ‘+’ in the left menu > click 'Create a New Shared Folder' button
To share an existing folder, go to the local Vault > right click the folder > Share Folder.
Add a Folder Name and click 'Create'. After creating the Shared Folder, you can then add users to the Shared Folder list to share it with others.