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GullySystem
A practical guide

Event planning software or spreadsheets: where the file breaks

Ganesh HSStrategy and Technology, GullySystem
Practical advice · 5 min read

In this guide 6 sections
The short answer

A spreadsheet per event works for a few small jobs. It breaks at four points: client quote versions, vendor advances and payments, run sheet changes on the day, and margin across events. Shared software helps most where several people edit the same event at once.

Quote versions drift apart

A client asks for a smaller stage, then two hundred more guests, then a second bar. Each change becomes a new workbook named final, final2 and final_revised_Mehta. By the week of the event, nobody knows which one the client approved.

A cell has no memory. It cannot say who cut the truss hire or why. Software keeps each quote as a numbered version and locks the signed one, so the budget the crew works against is the budget the client accepted. Nobody argues about the numbers when the signed version is one click away.

Test this. Ask a colleague which quote the client approved for last month’s gala. If finding it takes ten minutes of searching email attachments, the file has already failed.

  • Numbered quote versions with dates
  • Approved version locked after sign-off
  • Change log showing who edited which line
  • Client approval attached to the version

Vendor advances and payments get lost

Every event has a caterer, sound hire, florist, tent supplier and photographer. Each takes an advance, then a balance after teardown. Those figures sit on a payments tab that nobody updates when the bank transfer goes out.

The result is predictable. A florist chases a balance that was already paid. A decorator receives two advances. The money shows on a bank statement but never reaches the event.

Software links each payment to a vendor, an event and a due date, then lists everything owed this week across all events. A workbook shows only the one event you happen to have open. Treasury checks stop being a monthly scramble. Finance sees advances paid, balances due and cheques pending in one list.

Run sheets change on the day

A run sheet is the plan, minute by minute. The band loads in at four, the caterer sets up the live counters at five, and the chief guest’s car is due at seven. Then the flight is delayed.

In a workbook, one person edits and messages everyone else. Half the team keeps an older printout. Chaos follows.

Shared software pushes the change to every phone, stamped with the time of the edit. That matters when stage crew, registration desk and valet work from different corners of the venue.

  • Live run sheet on every phone
  • Task owner and status per line
  • Vendor arrival times and contacts
  • Change history for the post-event review

Margin by event is the hardest number to get

Management wants to know which kinds of events earn well. Weddings, corporate offsites and product launches behave differently, and that answer needs every event built on common cost heads.

One workbook lists decor as a single line. Another splits it into lighting, drapes, florals, fabrication and signage. Someone then rebuilds a quarterly summary by hand, copying cells between tabs on a Sunday. The summary is always a week late and nobody trusts it.

With shared software, every event uses the same heads. Quoted cost sits beside actual cost, so the overrun on a venue upgrade is visible the same week, not the next quarter.

When a spreadsheet is still fine

Not every team needs software. If you run a handful of events a year, one planner owns each and the vendors rarely change, a clean template does the job.

Move when two things happen together. More than one person edits an event, and you cannot say what you earned last quarter without losing a weekend to pivot tables.

A practical first step: list your last five events and mark where each file failed. If the same break appears in three of them, you have found the one to fix first. Keep that audit in a drawer if you like. It makes the case without a demo.

Spreadsheet failure audit

Your last five events run down the side of a single printed grid, with four columns across: quote versions, vendor payments, run sheet changes and margin. In each cell mark whether the file held, needed a fix or caused a problem. A last column notes the cost of the problem in hours, and a bottom row counts the breaks. Attach the oldest and newest workbook for each event so the break can be shown to the team.

Open a blank worksheet to print

Questions owners ask

How many events before a spreadsheet stops working?

No set count applies. It stops working when several people edit one event, or when you cannot compare events without rebuilding data by hand. Count the weekend hours spent reconciling files; that number usually settles the question.

Can we move past events into new software?

Yes, in part. Bring over vendor lists, client details and cost heads first. Full history for old events is rarely worth the effort.

What should the run sheet show?

Time, task, owner, vendor contact, status and the venue area. Keep it short enough to read on a phone while standing in a loading bay.

Is event software only for large agencies?

No. A small company with weddings every weekend feels the same pain as a large one, only with fewer staff to absorb the mistakes.

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