who makes the final decision on the blocking of the actors
Blocking (stage) In contemporary theater, the director usually determines blocking during rehearsal, telling actors where they should move for the proper dramatic effect, ensure sight lines for the audience and work with the lighting design of the scene.
America's Got Talent Following the producers' auditions, acts audition in front of (as of 2013) four celebrity judges. These auditions are held in theaters in various cities nationally and are later televised. Judges may individually register their disapproval of an act by pressing a red buzzer, which lights up their corresponding X above the stage. Any performer who receives X's (3 in seasons 1 to 7, or 4 from season 8 onwards) from the judges must stop performing and is eliminated. Since season three (2008), large audiences have also been a factor in the judging process, as their reaction to an act's performance may swing or influence a judge's vote. If an act receives three or more "yes" votes, they advance to the next round of competition. However, in the majority of seasons, several acts do not perform in the second round and are immediately sent home by the judges without a second performance.