Hi,

As suggested in the other answer, you can use studio application for customizing the report. If you don't need to use the studio application, you can achieve it from the developer mode by doing as follows.

* open reports menu under settings -> technical

* search for you report and open it

* you can see a smart button named Qweb view

* on clicking, you can see the related views of this report

You can inherit and modify the report by creating a new view and if you go for editing the original view(which is not recommended), you can prevent over writing by settings no update false for the record.

To see how to customize a report from ui, see: https://www.youtube.com/watch?v=-2Qsqk84dkI

Thanks

yo podría recomendarte usar los reportes dentro de la app de Studio, donde te deja sin problema editar los reportes muy dinámicamente, y crearlos de lo contrario existen ciertas limitaciones, al crear vistas nuevas que justamente estoy investigando al respecto, en caso que tenga algun dato con gusto lo comparto a la comunidad.