With the ALERT-Meerwerk33j app, additional work performed on location can be registered, which usually concerns items for which price agreements have already been made in advance. On the telephone, the user can indicate offline at which address/location an additional work station has been carried out and provide this with photos. At a time of your choosing, the data, including photos, can be processed to ALERT so that a total overview is created per post and per address. The photos are automatically linked and provided with a name in which the additional work station and location are reflected, so that a complete file can be submitted to the client.