You can view the giving history of the entire Current Group. If you are looking at a contact's MPD tab, you see the graph in the lower right showing their giving history. If you press the Group button in that screen, TntMPD will compile the giving history for ALL contacts in the Group list.
La vista por defecto de la pestaña MPD es la historial de donación del contacto seleccionado (arriba). La misma pestaña de MPD, luego de que presiones el botón Grupo (abajo).