Microsoft 365 Copilot Chat — The Complete Train-the-Trainer Guide for AI Change Leads

If you’re training people on Copilot Chat tomorrow and you’re wondering “what exactly am I teaching?” — this guide is for you.

I wrote this for AI Change Leads, Digital Champions, and anyone running a Train-the-Trainer session. It covers everything about Copilot Chat (the free tier included with your Microsoft 365 subscription) — not just what buttons to click, but how to explain the value, handle the tough questions, and actually get people excited about using it.

📖 Looking for the paid Copilot guide? See our Microsoft 365 Copilot (Licensed) — Complete Trainer Guide for everything about the full $30/month experience.

📋 How to use this guide: Bookmark it. Share it with your training team. Each section is self-contained — jump to what you need.

Table of Contents

• What Is Microsoft 365 Copilot Chat?
• Security & Enterprise Data Protection
• ⚠️ Upcoming Changes (April 15, 2026)
• Deep Dive: Copilot Chat Features
  • 1. The Chat Experience
  • 2. Upload Documents
  • 3. Suggested Prompts & Adaptive Cards
  • 4. Save Your Favourite Prompts
  • 5. Custom Instructions
  • 6. Memory
  • 7. Create — Images, Videos & More
  • 8. Copilot Pages
  • 9. Chat History & Search
  • 10. Agents
  • 11. Model Choice
• Copilot Chat Inside M365 Apps
• 🎯 Training Tomorrow? Start Here
• Positioning for Different Audiences
• Official Microsoft Resources
• Tools to Help Your Journey
• FAQ

🎯 Training Tomorrow? Start Here

If you’re short on time and need to run a Copilot Chat training session soon, here’s your quick-start guide.

30-Minute Session Agenda

Top 3 Demos That Always Land

1. Upload a document → Ask Copilot to summarise it — instant “wow” moment
2. Create a Page from a response → Share with a colleague — shows collaboration value
3. Set up Custom Instructions → See the difference — personalisation clicks immediately

Pre-Session Checklist

• ✅ Confirm Copilot Chat is pinned for your users (ask IT)
• ✅ Check if your org is >2,000 or <2,000 seats (affects in-app availability)
• ✅ Prepare a sample document to upload during the demo
• ✅ Test Copilot Chat yourself — make sure it works in your tenant
• ✅ Check if agents are visible (admin may have disabled)
• ✅ Check if Anthropic is enabled (affects WXP agents)

What Might Not Show Up (and What to Say)

What Is Microsoft 365 Copilot Chat?

Microsoft 365 Copilot Chat is a free, secure AI assistant included with every Microsoft 365 subscription. Think of it as your organisation’s approved AI chat — protected by enterprise-grade security, available to every user, and completely free.

flowchart TD
    A["🆓 Copilot Chat
(Free with M365)"] -->|"Web-grounded AI"| B["💬 Chat"]
    A --> C["📄 File Upload"]
    A --> D["🖼️ Create"]
    A --> E["📝 Pages"]
    A --> F["🤖 Agents"]
    A --> G["🧠 Memory"]
    style A fill:#1a3a4a,stroke:#60A5FA,color:#ffffff
    style B fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style C fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style D fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style E fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style F fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style G fill:#1a3a3a,stroke:#14B8A6,color:#ffffff

flowchart TD
    A["💳 M365 Copilot
($30/user/month)"] -->|"Work-grounded AI"| B["Everything in Chat PLUS"]
    B --> C["📊 Work Data via Graph"]
    B --> D["📱 Deep App Integration"]
    B --> E["🔬 Researcher & Analyst"]
    B --> F["📓 Notebooks"]
    B --> G["🧬 Anthropic Model Choice"]
    style A fill:#2a1a4a,stroke:#A78BFA,color:#ffffff
    style B fill:#2a1a3a,stroke:#A78BFA,color:#ffffff
    style C fill:#2a1a3a,stroke:#A78BFA,color:#ffffff
    style D fill:#2a1a3a,stroke:#A78BFA,color:#ffffff
    style E fill:#2a1a3a,stroke:#A78BFA,color:#ffffff
    style F fill:#2a1a3a,stroke:#A78BFA,color:#ffffff
    style G fill:#2a1a3a,stroke:#A78BFA,color:#ffffff

The Two Tiers at a Glance

🔧 Want a deeper side-by-side comparison? Use our interactive Copilot Feature Matrix to explore every feature across all Copilot tiers.

Security & Enterprise Data Protection

This is the section that matters most when you’re standing in front of a room of sceptical users. Before you teach them a single feature, they need to trust the tool. And the #1 question they’ll ask is: “Is my data safe?”

Here’s how to answer that confidently.

What Is Enterprise Data Protection?

Think of it like your phone’s encryption — it protects everything automatically, you don’t have to turn it on. Enterprise Data Protection means Copilot Chat is covered by the same security commitments that protect your emails in Exchange and your files in SharePoint. Every user signed in with a work account gets this automatically.

flowchart TD
    A["👤 User sends
a prompt"] --> B["🔒 Enterprise Data
Protection (EDP)"]
    B --> C["🧠 AI processes
the request"]
    C --> D["🔒 Response protected
by EDP"]
    D --> E["👤 User receives
secure response"]
    style A fill:#1a3a4a,stroke:#60A5FA,color:#ffffff
    style B fill:#1a4a2a,stroke:#66ff99,color:#ffffff
    style C fill:#2a2a3a,stroke:#A78BFA,color:#ffffff
    style D fill:#1a4a2a,stroke:#66ff99,color:#ffffff
    style E fill:#1a3a4a,stroke:#60A5FA,color:#ffffff

The Five EDP Promises

How to Explain Security to Your Users

What About Sharing Data with OpenAI?

A common question your users will ask. The answer is clear:

• ❌ No data is shared with OpenAI
• ❌ No data is used to train OpenAI models
• ✅ Microsoft uses OpenAI models through Azure OpenAI Service — Microsoft controls the infrastructure

📖 Official reference: Enterprise Data Protection in Microsoft 365 Copilot and Copilot Chat

📖 Privacy & Protections: Privacy and protections in Copilot Chat

Upcoming Changes (April 15, 2026)

If you’re training people this month, you need to know about this — because your trainees will ask.

Microsoft is pulling back free Copilot Chat from some Office apps on April 15. What happens depends on your organisation’s size. Know which category you fall into before you step into the training room.

📖 Full details: Copilot Chat Changes April 15 — What Every IT Admin Needs to Know

flowchart TD
    A["🏢 Your Org Size"] --> B{"≥ 2,000 paid
M365 seats?"}
    B -->|"Yes"| C["🔴 Copilot removed from
Word, Excel, PPT, OneNote
for unlicensed users"]
    B -->|"No"| D["🟡 Copilot stays but
under standard access
(possible throttling)"]
    C --> E["✅ Keeps: Web chat,
Outlook, Teams, WXP agents"]
    D --> F["✅ Keeps: Everything,
but may see upgrade prompts"]
    style A fill:#1a3a4a,stroke:#60A5FA,color:#ffffff
    style B fill:#3a3a1a,stroke:#ffaa00,color:#ffffff
    style C fill:#5c1a1a,stroke:#ff6666,color:#ffffff
    style D fill:#4a3a0a,stroke:#ffaa00,color:#ffffff
    style E fill:#1a4a2a,stroke:#66ff99,color:#ffffff
    style F fill:#1a4a2a,stroke:#66ff99,color:#ffffff

What Changes by Organisation Size

⚠️ Important for trainers: The 2,000-seat count includes paid M365 E/B/G/O seats and any Academic (A) SKU. Frontline (F) licences are not counted. If any tenant in your customer’s TPID has ≥ 2,000 seats, all tenants for that customer are affected.

How to Position This to Your Users

For large organisations, frame it as:

Deep Dive: Copilot Chat Features

Now let’s get into the features your users can use today. Even as a free tool, Copilot Chat is surprisingly powerful. Here’s how to teach each feature effectively.

flowchart TD
    A["🆓 Copilot Chat
Features"] --> B["💬 Chat"]
    A --> C["📄 File Upload"]
    A --> D["💡 Suggested Prompts"]
    A --> E["⭐ Save Prompts"]
    A --> F["⚙️ Custom Instructions"]
    A --> G["🧠 Memory"]
    A --> H["🎨 Create"]
    A --> I["📝 Pages"]
    A --> J["🤖 Agents"]
    A --> K["🔍 Search"]
    A --> L["🧪 Model Choice"]
    style A fill:#1a3a4a,stroke:#60A5FA,color:#ffffff
    style B fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style C fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style D fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style E fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style F fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style G fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style H fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style I fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style J fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style K fill:#1a3a3a,stroke:#14B8A6,color:#ffffff
    style L fill:#1a3a3a,stroke:#14B8A6,color:#ffffff

1. The Copilot Chat Experience

Copilot Chat is available at m365copilot.com, in the Microsoft 365 Copilot app, in Teams, Outlook, and Microsoft Edge.

When users sign in with their work account, they’ll see the green shield 🛡️ — confirming Enterprise Data Protection is active.

Where Can Users Access Copilot Chat?

Prompting Matters — A Lot

The single biggest factor in getting value from Copilot Chat is the quality of the prompt. As a trainer, this is your highest-impact teaching moment.

The CRAFT Framework for Better Prompts:

Example — Before and After:

🔧 Level up your prompting: Explore our AI Prompt Library with 84 ready-to-use prompts across 8 platforms, or try our interactive Prompt Polisher to score and improve any prompt instantly. For a hands-on learning experience, work through our Prompt Engineering Guide — 8 techniques with practice sandboxes.

2. Upload Documents for Better Answers

One of the most powerful features in Copilot Chat is the ability to upload documents directly into the conversation. This gives Copilot additional context to provide grounded, accurate responses based on your actual work documents.

How It Works

• Click the "+" button in the chat input
• Select a file from your device, OneDrive, or SharePoint
• Or type "/" and select a file from the ContextIQ menu
• Copilot reads the document and uses it to ground its response

What You Can Upload

• Word documents (.docx)
• PDFs
• PowerPoint presentations (.pptx)
• Excel spreadsheets (.xlsx)
• Text files

You Can Upload Multiple Files

Need Copilot to compare two documents or synthesise information from several sources? Upload multiple files in the same conversation for richer, more contextual answers.

Practical Examples for Training

3. Suggested Prompts & Adaptive Cards

When users first open Copilot Chat, they’ll see suggested prompts in the centre of the interface. These aren’t random — they’re contextual adaptive cards designed to help new users get started quickly.

Why This Matters for Trainers

• Reduces the blank-page problem — users don’t have to think of a prompt from scratch
• Builds confidence — clicking a pre-built prompt shows users what’s possible
• Personalised — for licensed users, suggestions include relevant files, people, and meetings

How to Use Them in Training

Walk your users through clicking a suggested prompt. Show them how the prompt auto-populates in the input box, and how they can modify it before sending. This teaches them the pattern: “Start with a suggestion → customise → send.”

4. Save Your Favourite Prompts

Found a prompt that works brilliantly? Save it. Copilot Chat lets users bookmark their favourite prompts so they can quickly reuse them later.

How to Save a Prompt

• After sending a prompt that works well, look for the save/bookmark option
• Saved prompts appear in your prompt collection for quick access
• You can organise and manage your saved prompts from the settings

Why This Is Valuable

• Consistency — use the same proven prompt structure every time
• Time-saving — no retyping complex prompts
• Knowledge sharing — trainers can create a library of recommended prompts and share them with the team

5. Custom Instructions

Custom instructions let users tell Copilot how they want all responses to behave — their role, preferred tone, formatting style, language, and other preferences. This is set once and applies to every conversation.

Where to Set Custom Instructions

Settings → Personalisation → Custom Instructions

Example Custom Instructions

Why Custom Instructions Are a Game-Changer

• ⏱️ Saves time — no need to repeat context in every chat
• 🎯 Better relevance — Copilot understands your role and needs upfront
• 📏 Consistent quality — every response follows your preferred style

6. Memory

Copilot Memory allows Copilot to remember key facts about you across conversations — your projects, preferences, working patterns, and context. Unlike custom instructions (which you set manually), memory is built over time as you chat.

How Memory Works

• Copilot observes patterns in your conversations and automatically stores relevant details
• For example, if you frequently discuss “Project Atlas,” Copilot will remember it
• Memory persists across sessions — you don’t need to re-explain context every time

Managing Your Memory

• View your memories: Go to Settings → Memory to see what Copilot has remembered
• Delete specific memories: Remove individual items you don’t want Copilot to retain
• Clear all memory: Reset everything if you want a fresh start

Where Is Memory Stored?

Memory data is stored securely in your Exchange mailbox (in a hidden folder), meaning it inherits the same security, compliance, and retention policies as your email. Your admin can manage memory settings at the tenant level.

⚠️ Admin note: Memory requires the Enhanced Personalisation control to be enabled at the admin level. If your admin disables it, Copilot won’t apply memories but won’t delete existing ones. Memory is currently in preview — availability varies by tenant, and your users may not see it yet. If it’s not available, let users know it’s coming and move on to other features.

7. Create — Images, Videos & More

The Create section in the Copilot app lets users generate visual content using AI and templates.

What Free Users Can Create

Image Generation

Users can create custom images using natural language — describe what you want, and Copilot generates it using Microsoft Designer. Available on desktop and mobile.

• Create images in multiple aspect ratios (landscape, portrait, square)
• Use reference image uploads as creative foundations for new visuals
• Great for presentations, social media, brainstorming, and visualising ideas

💡 For the paid licence: Create unlocks AI-powered creation (not just templates) plus brand kit integration — users can generate content that automatically uses your organisation’s approved logos, colours, and fonts.

8. Copilot Pages — Collaborative AI Canvas

Copilot Pages is one of the most underrated features in Copilot Chat. It turns any AI response into a persistent, shareable, and collaboratively editable document.

How Pages Work

1. Start a chat — ask Copilot anything
2. Create a Page — click the “Create a page” button on any response you want to keep
3. Edit together — share the page with colleagues. Multiple people can edit simultaneously
4. Add more AI content — keep chatting with Copilot directly on the page to refine and expand
5. Export — download the page as a Word document or PDF

Why Pages Are Powerful

• 🤝 Real-time collaboration — like a shared Google Doc, but AI-powered
• 📌 Persistent — unlike chat, pages stick around and can be found later
• 🔄 Iterative — refine content with Copilot on the page itself
• 📤 Exportable — turn the finished page into a proper document

Training Scenario

“Ask Copilot to brainstorm ideas for your upcoming team offsite. When you get a good response, click ‘Create a page.’ Share it with your team. Everyone can add their own ideas, and use Copilot on the page to organise and prioritise them. When you’re done, export it as a Word document for your manager.”

📖 Official reference: Introducing Microsoft 365 Copilot Pages

9. Chat History & Search

Every conversation with Copilot Chat is automatically saved in your chat history. Users can:

• Browse previous conversations in the left panel
• Search for specific chats by keyword
• Continue any previous conversation where they left off

The Real Value of Search

For Copilot Chat (free) users, Search finds your previous chats and web content.

For paid M365 Copilot users, Search transforms into an AI-powered enterprise search that can find:

• 📧 Emails from Outlook
• 📄 Documents from SharePoint and OneDrive
• 📅 Calendar events
• 💬 Teams messages
• 👥 People in your organisation

This is one of the biggest reasons to upgrade — the ability to find anything across your entire Microsoft 365 ecosystem using natural language.

10. Agents

Agents are specialised AI assistants designed for specific tasks. They extend what Copilot Chat can do beyond general conversation.

What Free Users Get

Key Agents to Highlight in Training

Agent Creation — What Trainers Need to Know

The ability to create agents depends on your organisation’s decisions:

flowchart TD
    A["🤖 Agent Creation
for Free Users"] --> B{"What grounding
does the agent need?"}
    B -->|"Web only"| C["✅ Possible
(if admin allows)"]
    B -->|"Documents /
SharePoint"| D["💰 Requires
billing plan"]
    D --> E["Pay-as-you-go
or
Copilot credits"]
    style A fill:#1a3a4a,stroke:#60A5FA,color:#ffffff
    style B fill:#3a3a1a,stroke:#ffaa00,color:#ffffff
    style C fill:#1a4a2a,stroke:#66ff99,color:#ffffff
    style D fill:#5c1a1a,stroke:#ff6666,color:#ffffff
    style E fill:#3a2a1a,stroke:#ff9900,color:#ffffff

📖 For the paid licence blog: Licensed users get full agent creation with any grounding source, plus the powerful Researcher (deep web research with citations) and Analyst (data analysis with Python) agents. These are covered in our companion guide.

11. Model Choice

Copilot Chat lets users choose how the underlying AI model behaves. By default, it uses Auto mode — a smart router that picks the best model for each prompt.

The Three Modes

How to Switch Modes

Look for the model selector at the top right of the Copilot Chat interface. Click it to switch between Auto, Quick Response, and Think Deeper.

Standard vs Priority Access

Free Copilot Chat users get standard access to these capabilities. This means:

• ✅ Features work as described
• ⚠️ During high-demand periods, quality or speed may vary
• ⚠️ Users may occasionally see “service is busy” messages

Paid M365 Copilot users get priority access — faster, more consistent availability during peak periods, best performance, and access to the latest models.

Copilot Chat Inside Microsoft 365 Apps

Here’s something your trainees might not realise — Copilot Chat doesn’t just live in the Copilot app. It also shows up as a side panel inside some Microsoft 365 apps. What free users get depends on the app:

Outlook — ✅ Available for All Users

Copilot Chat in Outlook remains available for all users, regardless of tenant size. Users can:

• Summarise email threads
• Draft replies
• Get scheduling help
• Ask questions about their inbox context

Word, Excel, PowerPoint, OneNote — ⚠️ Depends on Tenant Size

As of April 15, 2026:

• Large orgs (≥ 2,000 seats): Copilot side pane in these apps is removed for unlicensed users
• Smaller orgs (< 2,000 seats): Copilot side pane remains under standard access

When available, the side pane is aware of the document you have open — users can ask questions about the content without uploading it separately.

⚠️ Important: Even if the side pane is removed from Office apps, the WXP agents (Word, Excel, PowerPoint agents) remain available through the Copilot app — but only if Anthropic is enabled as a subprocessor in your tenant. These agents run exclusively on Anthropic’s Claude AI model. See our detailed blog for the full explanation.

Positioning Copilot Chat — For AI Change Leads

Here’s how to frame Copilot Chat for different audiences in your organisation:

For Leadership / Executives

For IT / Security Teams

For End Users

For Sceptics

Official Microsoft Resources

Tools I Built to Help Your Copilot Journey

I build free, open tools to make Copilot adoption easier for everyone — trainers, IT pros, and decision-makers. Here are some that go hand-in-hand with this guide:

Also Read: The Licensed Microsoft 365 Copilot Guide

This guide covers Copilot Chat — the free tier. Our companion blog post covers everything about the paid Microsoft 365 Copilot experience:

• 🔍 Work Data Grounding — how Copilot reads your emails, files, meetings, and chats
• 📱 Deep App Integration — Copilot in Word, Excel, PowerPoint, Teams, Outlook, OneNote, and more
• 🔬 Researcher & Analyst — the advanced reasoning agents
• 🤖 Full Agent Capabilities — creating agents with any grounding source
• 📓 Notebooks — long-form AI interaction
• 🧬 Anthropic Claude Model Choice — selecting AI models in specific apps
• 📊 Copilot Analytics — measuring adoption and impact

👉 Read it here: Microsoft 365 Copilot (Licensed) — Complete Trainer Guide

Frequently Asked Questions

Disclaimer: The views and opinions expressed in this article are my own and do not represent the official positions of Microsoft. I work at Microsoft as a Copilot Solution Engineer, but this guide is based on my own research, experience, and publicly available documentation. Features, capabilities, and availability are subject to change. Always refer to official Microsoft documentation for the most up-to-date and accurate information.