What is an important part of the referee's role during substitutions?

The referee’s role during substitutions is crucial for maintaining the overall integrity and pace of the game, which is why maintaining the flow of the game is considered an important part of this responsibility. When substitutions occur, they can disrupt the rhythm of play; thus, it is the referee's duty to manage this process efficiently so that it does not unduly affect the game's momentum.

A smooth transition during substitutions helps ensure that the game continues to run effectively and that neither team is unfairly disadvantaged by extended stoppages. This involves not just allowing players to come on and off the field, but also managing when and how these changes are made to keep the game progressing seamlessly. While aspects like the speed of substitution, timing, and monitoring player fatigue are important, they all tie back to the overarching goal of maintaining the game's flow.