In a corporate environment, a network administrator is tasked with configuring user accounts and roles within a Cisco Unified Communications Manager (CUCM) system. The administrator needs to ensure that users have appropriate access levels based on their job functions. The company has three distinct roles: Administrator, User, and Supervisor. Each role has specific permissions: Administrators can manage all aspects of the system, Users can only access their personal settings, and Supervisors can monitor user activities but cannot change system settings. If the administrator wants to assign a new user to the Supervisor role, which of the following actions must be taken to ensure compliance with best practices in user account management?