How can the substitution procedure help shorten the time spent during subs?

The substitution procedure is designed to streamline the process and minimize interruptions during a match. Allowing players to exit at the nearest boundary line facilitates a quicker transition off the field. This method reduces the time players spend leaving and enables substitutes to enter without waiting for players to jog across the field to the designated substitution area. Consequently, this approach helps maintain the flow of the game and minimizes downtime, contributing to a more efficient substitution process.

In comparison, the other methods mentioned may not be as effective in reducing time. For instance, allowing players to leave at any point could actually lead to confusion and disorganization on the field, as players may not exit in an orderly fashion. Permitting players to enter before others leave might create an overcrowded situation at the substitution area, leading to potential delays. Requiring substitutes to wait for a signal ensures clarity in communication but does not actively reduce the time taken for the substitution itself. Thus, allowing players to exit at the nearest boundary line is the most effective option for shortening substitution time.