EPPC 2026
Conference Sessions

Copilots and Agents Power Apps

Code and Generative UI in the Agentic Era: the TimeEntry Case Study

Developer

Level 300

SPEAKERS

Diana Birkelbach

MVP
ORBIS SE

ABOUT THE SESSION

Discover insights into building a modern, user-friendly and flexible Time Entry app for your employees using Power Apps! In this session, you’ll learn how to tackle the challenge of creating an intuitive time entry experience that meets diverse and complex requirements—such as weekly list views, matrix views, and project tracking—while exploring multiple approaches.

We’ll explore together multiple Power Apps approaches. Learn how to compare Code UI like PCF and Code Apps (developed with agent support) and Generative UI like Generative Pages or vibe.PowerApps, while uncovering best practices for performance, flexibility, and scalability. For an intelligent and user-friendly experience, we’ll go a step further, and meet the users right inside the M365 Copilot, using the new app-powered UI widgets—no app switch.

This session offers a practical and forward-looking exploration of several implementation strategies for addressing complex Time Entry requirements in Power Apps.

It examines how PCF can be used in model-driven app views and custom pages to balance flexibility, usability, and performance, with attention to architectural patterns, React and Fluent UI integration, styling and theming, and the differences between dataset PCFs and Power Apps grid customizer PCFs.

It also covers working with Generative Pages, including best practices, common pitfalls, debugging limitations, and scenarios in which a professional developer can extend or evolve the solution with GitHub Copilot.

In addition, the session explores building full Code Apps based on Power Apps SDK for scenarios that require maximum control. We start from scratch with Vite templates, while also considering key design choices such as connectors versus Dataverse tables, single-page application patterns, and modern React capabilities and optimizations.

Key takeaways:

1. Explore the full range of modern and agentic approaches for creating custom UI in Power Apps.

2. Master fusion development for advanced scenarios: discover how pro devs can build PCFs, Code Apps or extend Generative Pages, blending low-code and vibe-code speed with pro-code power.

3. Build smarter user experiences right inside the M365 Copilot conversational workflow, with app-powered custom UI widgets

Finally, it explores cutting-edge possibilities to extend Microsoft 365 Copilot with custom UI, provided through Power Apps and the new app-powered UI widgets based on MCP Apps, right inside the conversational workflow, and how this helps your users with time reporting.

At the end, you’ll understand best practices, learn how to optimize performance, and uncover strategies for blending low-code and pro-code approaches in the era of agentic development. Whether you’re a maker or a pro developer, this session will empower you to pick the right approach for your scenario and keep the door open for future innovation.