They come standard on my keyboard ¡¡¡¡¡¡ ¿¿¿¿¿¿¿ but I usually forget to use them. Do not know how to get them with your keyboard
Back in the old times, there was this old DOS command: "keyb sp" which changed the standard US keyboard setup to Spanish setup. I had to learn the location of relevant punctuation marks (for example "\") on a US keyboard to use when the keyboard was in US mode