Blindolbat wroteSaw teams try this a few times this year in HS. I had a team try this on me early in the season but I caught them before anyone lined up for shots and made sure to let everyone know who the correct shooter should be.
It's common practice here in my little corner of Connecticut for officials to tell each other, "Twenty-three shoots", before granting a timeout before a free throw situation.
In every free throw situation, it's the responsibility of the noncalling official to remember the shooter. If not obvious, it's the responsibility of the calling official to identify the shooter, by pointing, or verbally, "Twenty-three shoots", or both.
Wasn't it Confucius who said, "When the ball is dead, we must be alive."?