Your organization is preparing to deploy Workspace and will continue using your company's existing identity provider for authentication and single sign-on (SSO). In order to migrate data from an external system, you were required to provision each user's account in advance. Your IT team and select users (~5% of the organization) have been using Workspace for configuration and testing purposes. The remainder of the organization can technically access their accounts now, but the IT team wants to block their access until the migrations are complete. What should your organization do?