ST is "Special Treatment." Basically, a T (or several) are chosen by the warden to have their own personal freeday. They can do whatever they want, but are followed around by another guard. At the end of the round when there are few prisoners left, their ST is over and have to follow orders again.
To become the warden, a CT must ask over mic or text if they can become warden. The other CTs usually decide who can become warden out of the people who asked.
Hope these answered your questions. If you have any more, please PM more and I will gladly answer.
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