Pages in menu navigation

Hello,
I have a problem with the menu.
I have a mantra theme version 1.9.9.4.
When ever i publish something, it always appear in the menu.
For example, the legal information page, i dont want it to appear in the menu.
How can i do so that one page that is publish will not appear in the menu?

And other question is how can i disable or remove the link of one tab of the menu?I tried with url=# but is not working

Thanks you very much