you are right, I must be clearer but I'm not very good at writing in English. I am Italian and therefore of the same arduino country .....
I see how to explain it better: I can not understand how to create menus, navigable on lcd, just can not understand how logic to write a program. I've been searching on google and many are posting their software, I would like to understand just how to create the program. I apologize for the disorder!