After a rent is generated in Finance you can still add or modify the amounts if needed. When you click on Edit on the right or on Record a payment (to the right of the item, under the column ’Action’), you will see the Payments fields.
For instance you can record items such as council tax, parking, cleaning service, or exceptional payments by adding the required data (description and amount) in these fields.
The additional payments are added to the overall tenant’s Balance. Furthermore, if the overall amount of the payment is more or less than the total due, the difference can be automatically taken into account for the following rent (if you have set Tenant Balance Deferral to ’automatic’). You can modify this settings in Tenancies > Edit tenancy > OTHER SETTINGS tab.