To edit a reservation:
From the Reservation Details page in the Bookings area, you can edit one booking or multiple bookings.
Under the Let Me Search for a Room section in the left-hand column, you can select filters to apply to your search (e.g., Floors, Room Types, etc.).
From the Reservation Details page, click Cancel Reservation. Canceling a reservation will also cancel all bookings under the reservation.
To cancel multiple bookings, click Cancel Bookings in the upper corner of your My Events list.