Hi @ltrevino7
Welcome to the LastPass Community.
In the case where some employees already have logins using their work emails, an Enterprise can designate a specific domain as theirs. Once enabled, users who sign up for LastPass as a personal user will automatically be provisioned to the Enterprise, instead. They will receive an email that the provisioning took place.
Auto-provisioning- Once enabled any new accounts with an email matching the approved domain will automatically be provisioned to the enterprise.
Outside of enterprise/Disable Registration- Once enabled, a banner will ALWAYS be shown on the dashboard about the users of the specified email domain(s) that are registered outside of the enterprise account so that the administrator can invite them.