When setting up a project one of the most important things is the ability to keep its momentum.
In a theater play, this task is handled by the prompter. He’s there to give actors a prompt when they are stuck, forgot a line, or have to be reminded that it’s their prompt. With an orchestra, this is part of the conductor’s task, he continuously indicates the rhythm allowing the whole orchestra to stay together while playing.
It is worth noting, that these tasks only become relevant once it comes to the performance itself. That is the sole part of the project that is expected to run as frictionless as possible. Until then, frictions are acceptable if not a necessary part of establishing the circumstances allowing for a great performance. The art is to keep these frictions part of the creation process and focused on contributing to the best possible performance.