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In Microsoft Copilot Studio, especially when generative orchestration is enabled, the agent selects the most appropriate capability based on user intent.

For the first requirement, when a user’s input is vague, ambiguous, or does not clearly map to a known action, the correct feature is the Fallback topic . This topic is specifically intended to handle situations where the copilot cannot confidently determine the user’s intent. It provides a safe default response such as a help message, clarification request, or guidance on what the user can ask next.

For the second requirement, when the user asks for something that requires interacting with an outside system—such as checking order status—the correct feature is a tool (connector) . In Copilot Studio, tools/connectors are used to call external services, APIs, workflows, or business systems. Since the portal uses Microsoft Dataverse , and the scenario involves starting an external process based on the user’s request, a connector-backed tool is the right design choice.

Why the other options are not correct here:

A trigger phrase is used to help match utterances to a topic, but it does not itself provide the default unclear-input handling or execute external business processes.

A skill is not the best answer in this context; Copilot Studio commonly uses tools/connectors/actions for external operations.

The Escalate topic is used when handing off to a human or another escalation path, not for unclear input by default.