1. Add the "Disallowed expenses" module from the applications
2. Go to the Fleet application to add any new vehicles.
   For each vehicle, go to the fiche to indicate the rate of disallowed expenses and the start date of this rate.
3. Go to the chart of accounts and, for each account concerned by disallowed expenses, open the account configuration and enter the code corresponding to the category of disallowed expenses.
4. When encoding an invoice, miscellaneous transaction or bank, add the "vehicle" field to select the vehicle concerned.
5. In the disallowed expenses report, select the "Vehicle split" option.

See the tuto in video