Sessions view provides a list of a particular user's sessions. The information displayed includes the session detail number, applid (which may correspond to a VTAM or real applid, or an APPL statement name), ACB name, node name, logmode, status, script name, and whether or not the session is being traced.
From Sessions view you can refresh the view, cancel a user's session, or trace a user's session.
See Cancelling a user's session.