thanks to your advice, I installed the quickstart and I could see how the system to create the megamenu userguide is different from that given here in the forum.
then I did not want to say that the megamenu was nonexistent but rather wanted to understand why not working.
strings to be included in the modules are different and each has its function. thank you for letting me reply to your post but if it is possible in the future, I wish I could follow a user guide that shows me how to set up better.
I forgot something very important: when you appear in a menu form, the title of the form (found for example in the right position) is duplicated! now I try to find out why this happens
regards