When can HIGH NOTES be entered onto the FIELD?

The correct answer indicates that HIGH NOTES can only be entered onto the FIELD during the last 20 seconds of the MATCH. This specific timeframe is crucial as it establishes a strategic element where teams can utilize their remaining actions and potentially influence the outcome of the MATCH in a concentrated burst of activity. By allowing HIGH NOTES to be entered only in the final moments, the rules encourage teams to plan their strategies and actions carefully throughout the MATCH, saving impactful moves for the end. This promotes dynamic gameplay and adds excitement as teams navigate the remaining time, seeking to maximize their scores right before the MATCH concludes.