If you have a reservation with more then one room in, you can cancel one of the rooms like this.
1. Find the reservation you want to remove a room from.
2. Click 'Edit' in top right corner of the reservation.
3. Find the room you want to remove and press 'Cancel'. The 'Cancel' button will only appear for reservations with more then one room, for reservations with only one room you will have to cancel the reservation instead
