able to add a different service in a booking
once you have made a booking for a room, you seem to be unable to duplicate it and add a different service (like parking or cot). you should get the ability to change this when making the duplicate as the cot and parking are in general for the same dates as the room booking
Hi, to create new reservation of another bookable service linked to a reservation of the accommodation, please, use Reservation group functionality.
You can use the same dates, details etc - just use the "Add another reservation" button in the Reservation flow.