In a deciding set, when should a scorer mark points on the far right of the score sheet?

In a deciding set of volleyball, the scorer marks points on the far right of the score sheet until the court switch occurs. This practice is crucial as it helps in tracking the score accurately during the most critical part of the match. Typically, in a match, teams switch sides after one team reaches a certain number of points, usually half of the deciding set, in order to ensure fair play as court conditions can change. The points marked on the far right until this switch allows for a clear representation of the game's progression and ensures that the current score is delineated before any potential disruptions or changes in positioning due to the switch.

The other options, while they might seem reasonable, do not accurately represent the established protocol during a deciding set. Timeouts and the end of the match have specific scoring practices that differ from tracking points before the court switch, and marking points as soon as they are scored does not provide the contextual clarity about side transitions that the far-right markings during the set provide.