# Security
## Role-based Access and Communications
The diagram below shows the differences between Conducttr roles. Note that when designing an exercise the term "role" refers to the player's utilisation during the exercise.
Privileged access requires 2FA. Standard access for exercise participants can have a variety of registration and login options including 2FA through to anonymous click-to-play access for open exercises.
Content published by inject from a Master Events List can be directed to certain players and not others based on their team, role, group and position.
For Worlds clients there is an additional role which is that of World Admin. The World Admin can create business units (referred to by Conducttr as "hubs") and assign facilitators with permissions to access exercises published to their hub.
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