Admin Area System Permissions not working

[selcukbeyhan]

Hello,
In the admin area within the navigation menu under System, there is a menu item Permissions.
When I go to that page, I see following screen but the items are not clickable.
What is this screen actually for?
When I click on "Add" button, the app asks me to choose a role. What is the relation of permissions with roles here in this page?