# Pass UTMs into OnceHub Scheduling Links

## UTM attribution overview

Booking pages are a common leak in attribution. OnceHub UTM Tracking Integration needs UTMs on the booking URL when the appointment is confirmed. UTM Grabber already captured them on your WordPress site. Here is how to carry them over.

ScheduleOnce/OnceHub bookings accept tracking params on the booking URL.

### Steps

1. Append handl\_utm to scheduling page URLs

Add `utm-out` to any button or link that opens your OnceHub UTM Tracking Integration scheduler. [utm-out class guide](https://docs.utmgrabber.com/books/102-getting-started-for-handl-utm-grabber-v3/page/appending-utms-to-the-buttons-using-class-name-attributes-selectively).

For a thank-you page webhook flow, read [Send OnceHub UTMs via Webhook](https://docs.utmgrabber.com/books/oncehub-integration/page/end-nce-ub-s-via-ebhook).