context: The event saw assistant referees being allowed to intervene an ongoing game, in particular to help the match official apply the 10-metre rule when deciding free-kicks – as well as warn the referee instantly if he had booked or ejected the wrong player, something that was not possible in previous tournaments.
source: Also, fourth officials were given a larger role in assisting to take command of the match if any decisions are gone unnoticed by the referee or an assistant referee.
reference_original: Adicionalmente, bandeirinhas tinham um papel maior de assumir o comando da partida quando qualquer decisão passasse despercebida pelo árbitro ou árbitros assistentes.
reference_flipped: Adicionalmente, bandeirinhas tinham um papel maior de assumir o comando da partida quando qualquer decisão passasse despercebida pela árbitro ou árbitros assistentes.