Create a Microsoft 365 Copilot Chat agent

In this exercise, you’re encouraged to be creative and design an agent that’s of significant interest to you. For example, you might want to solve a real-world business problem, improve productivity in a specific area at your company, or address a personal topic that interests you. Because each student creates their own personal agent, the instructions in this exercise focus on the structure and order of how to configure an agent rather than specifying actual values to enter in each field. It’s up to you to decide what you want to enter in each field as you create your agent.

Exercise - Build a custom agent with Agent Builder

1. In your Microsoft Edge browser, sign in to the Microsoft 365 Copilot home page https://m365.cloud.microsoft.com.

2. In Microsoft 365 Copilot, select New agent in the navigation pane. Doing so opens Agent Builder and displays the New Agent page.

3. On the New Agent page, enter a prompt that asks Agent Builder to create your new agent. In the prompt, enter the agent’s name along with a brief description that explains what the agent is for, who its target audience is, and what you want it to do. Although you can choose a template at the bottom of the page to base your agent on, don’t select a template for this exercise. The purpose of this exercise is to create a fully custom agent from scratch.

4. After you enter a description and select the Send button, the Agent Builder form should appear for your new agent. The Agent Builder chat pane appears on the left, and the agent details appear on the right. At the top of the form are a Configure tab and a Try It tab.

   • The Agent Builder chat pane on the left enables you to carry on a conversation with Agent Builder to refine your agent.

   • The Try It tab enables you to test the agent by entering starter prompts or custom messages.

   • The Configure tab enables you to define the detailed settings that drive the agent.

   Wait a minute or two for Agent Builder to create the agent, at which time it displays the agent’s name and description in the Agent preview pane.

5. If you didn’t provide a name for your agent in the description that you just entered, then Agent Builder typically provides a suggested name and asks you to either confirm the name or provide a new one. You should reply accordingly.

6. At this point, Agent Builder typically prompts you to refine the description for your agent. It does so through a series of questions or suggested prompts. You can optionally respond to each question or select certain prompts until the agent’s description is to your liking.

   [!IMPORTANT] The beauty of the Agent Builder process is that it automatically translates your basic, natural language description into a complex set of instructions. This process saves you from creating this detailed instruction set on your own.

7. Once you’re satisfied with the agent’s description, select the Configure tab at the top of the form. Let’s see what Agent Builder did based on your finalized description.

8. On the Configure tab, ignore the Template and Agent icon options for now. In a real-world scenario, you can optionally select a template that you want to base your agent upon, and you can assign your agent a custom icon. Notice how the Name and Description fields are filled in based on your finalized description.

9. Scroll down to the Instructions section. Agent Builder generated these instructions based on your initial description and the updates that you made to it. Review the detailed level of instructions that Agent Builder generated.

10. If you wish to change the instructions, you can either manually edit them directly in the Instructions field, or you can ask Agent Builder to update the instructions for you.

11. While the current instructions look good, you wonder if they could be improved upon. You aren’t sure how to improve them, so you decide to ask Agent Builder what it thinks. In the Agent Builder chat pane on the left, enter a prompt that asks Agent Builder what other instructions it would recommend that could improve this agent.

12. Review Agent Builder’s recommendations. If you’re pleased with its suggestions, ask Agent Builder to add them to the agent’s instructions.

13. Once Agent Builder responds that it updated the instructions, select the Configure tab and scroll through the Instructions. Note the new items that Agent Builder added.

14. Now that you’re satisfied with the instructions, you’re ready to configure the agent’s knowledge sources and suggested prompts. On the Configure tab, scroll down to the Knowledge section. You should assign any relevant data sources, such as SharePoint sites, documents, or non-Microsoft integrations, that your agent should reference.

    [!WARNING] If you don’t add any public websites or work data to your agent, it might still be able to respond to your requests, but only using general capabilities of the underlying large language model (LLM), such as answering common knowledge questions, basic reasoning, or generating generalized text. As such, it’s recommended that you ground your agents in specific work data or public websites; otherwise, the agent’s responses might lack the context or relevance needed for business-specific tasks.

15. In the Capabilities section, you can optionally enable or disable the Create documents, charts, and code and Create images tools by selecting their toggle switches. Both tools are turned on by default.

16. In the Suggested prompts section, Agent Builder displays the suggested prompts that it automatically created when you entered the agent’s description. You can edit or delete any of the existing prompts or add new ones.

17. In the Try It tab on the top of the form, you can optionally test the agent by selecting several of the suggested prompts or submitting custom prompts. Verify the agent is correctly pulling in data from the knowledge source documents.

18. You can test your agent as long as you want and refine your configuration if it isn’t working or responding as you intended. You can do so by either manually updating the Instructions, or by updating the Description, in which case Agent Builder automatically updates the Instructions based on the changes you made to the Description.

19. Once you feel the agent is configured properly and you’re satisfied with the results of the suggested prompts, select the Create button at the top of the page.

20. Once the agent is created, a dialog box appears that indicates the agent was successfully created. In this dialog box, you can either go to the agent or share it. Select the Go to agent option.

    [!NOTE] At this stage, the agent is private and accessible only to you. In a real-world scenario where the agent needs to be used by multiple team members, you would share it with those individuals. For this training exercise, sharing isn’t required since you’re working within your own tenant.

21. On your agent’s window, note how the agent appears in the navigation pane. Enter any of the starter prompts or any other custom prompts to test the agent.

22. When you’re done using the agent, select All agents in the navigation pane. The Agent Store window appears and displays your agent in the Your agents section. You can access the agent from the Agent Store at any time, or you can select the pin icon next to the agent in the navigation pane to keep it visible under the list of agents.