Men's T20I Match Clause 3: The Scorers
3.1. Appointment of scorers
Two scorers shall be appointed to record all runs scored, all wickets taken and, where appropriate, number of overs bowled.
3.2. Correctness of scores
The scorers shall frequently check to ensure that their records agree and consult with the umpires if necessary. See clause 2.15 (Correctness of scores).
3.3. Acknowledging signals
The scorers shall accept all instructions and signals given to them by the umpires and shall immediately acknowledge each separate signal.