In the English version, it is enabled by going to the Slide Show menu and
choosing "Set up Show." On the top left of the dialogue box, is a section
for "Show type." There are three radio buttons in this section (with a
check box) after the second radio button. "Browsed at a kiosk (full
screen)" is the the third radio button (right after the check box).
Perhaps, someone with the Spanish version (probably with worse English
than you because your English is great) can verify if the buttons are in
the same place in the Spanish version.
--David

Enrique,
You can find kiosk mode in Slide show - set-up show (Presentación con
diapositivas - Configurar presentación). You will find kiosk mode top left
in the dialogue.