How to create pages and change title and description in PrestaShop?

Question

Prestashop

Hello. For the first time I heard about prestoshop and I was given a task in it. It is simple, but I have never worked in this SMS. I go to the admin panel, there are settings, pages, but when I click access is closed, it writes

Answer 1

Show a screenshot of the problem.
It's not entirely clear where exactly you're wrong.