Final answer:
Prisoners of War choose their spokesman or representative as needed through appointment by the senior enlisted prisoner when there is no commissioned officer present.
Step-by-step explanation:
If no Prisoner of War (POW) of commissioned officer rank is present in a prisoner group, prisoners typically choose their spokesman or representative as needed, through an appointment by the senior enlisted prisoner. This practice is not done on a scheduled basis like a monthly election nor is it typically a weekly appointment by the captors. The selected representative is responsible for communicating with the authorities on behalf of the prisoners, handling any negotiations, and bringing forth the concerns and requests of the group.