Answer:
"The coleader is responsible for keeping unauthorized people out."
Step-by-step explanation:
CISD or Critical Incident Stress Debriefing was a process originally developed for professionals like firefighters or hospital emergency staff who can experience some kind of traumatic or distressing events in their line of work. Now the program has also been extended to children who face abuse or some traumatic event in their house.
Role of coleader in CISD program is to facilitate the leader with their work. They should be able to support people in the group and make the debriefing process smooth. The doorkeeper is responsible for keeping unauthorized people out. For example, in case of an accident, the doorkeeper would keep media and spectators out.