Multiple legs of a journey in one expense box
Add more than one leg of a journey to a claim- e.g Amsterdam to London, London to Edinburgh that has been charged at one price. I don't know if you already said you were doing this but I'm coming across it now so thought I should pop it in here.

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It would be good (and more accurate) if users could enter intermediate destinations on their trips - eg for a flight from Edinburgh to New York via Amsterdam, or a car journey stopping off at multiple locations.
At the moment to get accurate results users have to enter each leg of the journey separately (either splitting the cost between each leg, or leaving the cost at zero for the extra legs).
Alternatively for trips other than flights if they know the distance travelled they can enter a manual distance for their trip and mention the route in the description. This will produce the correct carbon and distance figures but loses a small amount of detail (and relies on the user or an administrator calculating the trip distance manually).