How to Plan Set Lockups and Perimeter Safety on a Film Call Sheet

When an assistant director calls "Lock it up!" over the walkie-talkie, the entire perimeter of your filming location must instantly seal shut. Pedestrians stop, crew members freeze in place, and background traffic halts. However, if your production assistants and security team do not know their assigned posts before arriving on set, roll calls disintegrate into chaotic shouting and blown takes.

What Is a Set Lockup and Why Must It Be Documented?

A set lockup is the tactical protocol used during filming to secure doors, hallways, street corners, and sightlines from unauthorized movement or noise while cameras roll. Effective lockups protect public safety around moving vehicles, stunts, and heavy camera rigs while preventing ruined audio from casual foot traffic.

Documenting your lockup strategy directly on the daily call sheet ensures that key production assistants, locations managers, and department leads know their posts, priority access paths, and emergency release protocols before the first rehearsal.

Core Lockup Information to Include on Your Call Sheet

• Designated Lockup Stations: Number each exterior doorway, alleyway, or street crossing with assigned PA names so perimeter coverage is clear.
• Hot Points and High-Risk Zones: Clearly flag blind driveways, active business entrances, or public sidewalks that require polite pedestrian holds during takes.
• Walkie Channel Protocols: State which radio channels the lockup crew must monitor to hear the AD team call rolls and cuts in real time.
• Emergency Vehicle Clearance Routes: Note mandatory clear lanes for ambulances, fire access, or resident driveways that can never be blocked by gear.

Instead of manually retyping location notes every evening in messy spreadsheets, modern ADs build structured call sheets in minutes. With Easy Call Sheets, you can set individual call times for early lockup PAs, embed precise GPS coordinates for perimeter posts, and attach location security diagrams directly to the digital sheet.

Best Practices for Briefing Your Lockup Crew

Never rely solely on verbal instructions given during the morning scramble. Use these steps to guarantee your perimeter holds up throughout complex shooting days:

• Attach a Visual Lockup Map: Include an annotated overhead map showing designated PA standing positions, barricades, and company truck parking zones.
• Stagger PA Pre-Calls: Call your key set PAs 15 to 30 minutes ahead of general crew call to physically inspect and tape off perimeter doors before gear unloads.
• Establish Polite Public Communication Scripts: Remind lockup PAs in the general notes how to respectfully ask pedestrians for brief 90-second holds during camera rolling.

For complex location days with multiple company moves, large suites like StudioBinder offer extensive project modules, but when your priority is getting a crystal-clear call sheet into crew hands instantly, a dedicated builder keeps prep friction-free.

Keep Every Location Secure and Confirmed

A tight set lockup starts with clear communication long before crew arrives at base camp. By organizing your lockup stations, radio channels, and safety rules directly on the call sheet, your entire team stays aligned and vigilant on every take.

Switch to Easy Call Sheets to generate professional call sheets with automated weather forecasts, custom branding, and instant one-tap crew confirmations without the spreadsheet grind.