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Chapter 02

Tell us what you need.
We’ll write the prompt.

Two paths. Try the Coach for a ready-to-paste prompt, or read the guide to understand what makes a prompt land.

01 What’s a prompt? · 60 seconds

A prompt is a brief — instructions you give to Copilot. The difference between asking for “a summary” and asking for “a 250-word readout for the steering group, with decisions, risks, and next milestones”.

Good prompts have five parts. The Coach below builds them for you. If you ever write your own, this shape is what to aim for.

Skip to the Coach
  1. 01 Task what you want produced
  2. 02 Audience who reads it
  3. 03 Context what’s going on
  4. 04 Constraints what to avoid
  5. 05 Output shape, length, tone
02 · Workspace · try it Live
Prompt Coach

👋 Hi — let’s get your prompt right. Tell me what you need, and I’ll shape it into a prompt that works.

Not sure which tool to use?
Use the AI Solution Advisor
Describe your task in plain words — the Solution Advisor recommends the right Arup-available tool, flags governance, and tells you whether AI is even needed.
05 · 2 min
Reference

What sits behind a good prompt

a. What a strong prompt usually has — Task, Audience, Context, Constraints, Output
  1. 01Task — what you want produced
  2. 02Audience — who reads it
  3. 03Context — what’s going on
  4. 04Constraints — what to avoid
  5. 05Output — shape, length, tone

The Coach handles these for you. Useful to know if you write your own.

b. Things that usually go wrong — and how the Coach catches them
  • Vague audience — “make it executive” without saying which executive.
  • Unclear deliverable — “summarise” with no shape or length.
  • Not enough context — the AI can’t see the situation in your head.
  • Doing too much at once — one prompt asked to draft, edit, and review.
  • No output format — saying bullets, table, or paragraph is half the win.
  • Forcing certainty — asking for confidence where the source is silent.
  • Missing constraints — no guardrails, so figures get invented.
  • Restarting instead of refining — rewriting when a follow-up would do.
End of chapter 02

A good prompt is a brief written for a colleague
who has 30 seconds and one job.

  1. 01Task
  2. 02Audience
  3. 03Context
  4. 04Constraints
  5. 05Output

Next chapter: see these prompts inside a real day at work.