If you want to select more than one single entry, but they are not next to each other in the list, you have to select the first by clicking on it with the & LMB; and then select the other entries by holding down the & Ctrl; key and clicking on them with the & LMB;.
Se se quere seleccionar máis de unha entrada que non sexan contiguas, hai que seleccionar a primeira premendo nela co & LMB; e seleccionando a continuación as outras entradas mantendo premida a tecla & Ctrl; e premendo nelas co & LMB;.