void SetUsed(bool bUsed)

SetUsed tells the APooledCharacter instance whether or not it is being used. If the instance is part of a pool, it enables/disables the ActorTick, collision, and visibility, then either begins or ends using the APooledCharacter (more on that later). If the APooledCharacter is NOT part of a pool, then it either begins using the instance or destroys it.