The Recording Setup feature - located in the upper right corner of the screen - is for assigning users (Learners, Simulated Patients and Facilitators) to a recording.
This function is available for users who have access to start and stop recording, that is, for users with Admin and Facilitator roles. (See also: Recording Setup in the Recording module.)
On the respective tabs of the Select participants panel, user groups can also be assigned/modified to a recording after completion, within the Video Review module.