The libero can be played as a 2 pass with a certain limit. If the libero passes the ball above the hand, it must be behind the 3 meter line (steps are not allowed); otherwise, the ball cannot be used to strike before the 3 meter line. Underhand passes can be performed anywhere on the field. The libero is usually the person with the most defensive skill on the team. In addition, there is a table that tracks the referees libero to control the libero who performs a substitution. There may be only 1 libero per set (game), but there can be different liberos in each new set (new game).
In addition, the libero is generally not permitted to serve, according to international law, except for the women’s NCAA tournament, until the 2004 amendment allows the libero to play, but only in the case of special spins. This is only permissible for a single person to whom the libero replaces, not to all those to whom the libero can replace. The changed rules allowed high schools and high schools to play immediately. Libero’s only attack technique when playing indoors is probably to bounce the ball to the ceiling, taking advantage of the gravity to make a ball of several hundred grams to increase to several kilograms when bouncing from the ceiling straight down the opponent’s field, causing difficulty. towel in the ball. However, this is not an easy skill. The libero is free to enter and exit the field without notice to the referee for the purpose of allowing the owners to rest.