A run of show is not a schedule. A schedule says what happens. A run of show says who makes it happen, what the cue is, and what the fallback is when it does not.
One row per moment
Time, duration, what happens, who owns it, what the cue is. If a row cannot name an owner, that moment has no owner and it will be the one that slips.
Write the cues, not just the times
"8:15 music down, MC walks" is a time. "MC walks when the DJ drops the outro, sound cuts on his first step" is a cue. Cues survive a programme running eleven minutes late; times do not.
Build in slack you can spend
Put five minutes of deliberate air between major segments. Something will overrun and you will spend it. If nothing does, you finish early, which no guest has ever complained about.
Decide the overrun rule in advance
If an act runs long, what gets cut? Decide now, calmly, and tell the person whose slot is at risk before the night rather than during it.
Start it before doors, not at doors
The run of show should begin at load-in, not at the moment guests arrive. Vendor arrival times, sound check, briefing the door team, the walk-through: these are the hours where the evening is actually decided, and leaving them out of the document is why they run late.
Brief the whole team from it
Fifteen minutes before doors, gather everyone with a role and walk the document out loud. Most on-the-night failures are not skill failures, they are two people holding different assumptions about who does something.
Mark the points of no return
Some decisions cannot be reversed once passed: opening the doors, starting the stream, releasing held seats. Flag them in the document so whoever is running the night knows which moments deserve a pause and a check.
Print it
Phones die, networks fail, and the person who most needs the document is the one whose hands are full. Paper copies at the desk, at the stage and at the door.
Review it the next day
Mark up what actually happened against what was planned, while it is fresh. That annotated copy becomes the first draft of your next run of show and is the single fastest way to get better at running events.