Dan Attwood developed the Booking Rules Email: ICS Attachments feature for the Wunderbyte-GmbH/moodle-mod_booking repository, focusing on backend development and Moodle plugin customization using PHP. He implemented configurable options to include or omit ICS calendar attachments in booking rule emails, with logic to indicate event creation or cancellation. The solution enhanced ICS rendering for compatibility with Google Calendar and other clients, improving the reliability of calendar-based communications. Dan’s work provided per-rule control over attachment behavior, reducing user confusion and follow-up. The feature was delivered end-to-end in a single, traceable commit, demonstrating depth in both design and implementation.