The correct answer is 'Profile management'. Profile management allows for the creation of different configurations that can be applied to different groups or types of devices within the MDM solution. This means that the IT department can set up profiles with varying restrictions and controls as per the role and requirements of various user groups, while also providing personal and enterprise data separation. Dual persona solutions focus on separating work and personal profiles but may not offer the granularity needed for different roles. Geofencing is used for location-based security controls. Application management involves distributing and managing apps but does not inherently provide the data separation and tailored control levels for different groups.