I successfully added Italian as a second input language for my keyboard. By using the Super+Space key I can switch from English to Italian. The icon in the menu bar indicates this. When I select the keyboard layout chart for the Italian, some keys have 4 letters on them.
I cannot figure out how to access any of these different options.
For example, looking at the keyboard layout, the o key has 4 letters: small o and uppercase O, and the same with a grave accent. How do I get the accented ones to be used?