Panel Permission: Editor only see his own Pages

The CMS Questions
1

Hellooo - I try to get into permissions. I want it that the editor only sees his own Pages.
How it looks:

14
14845×571 22.2 KB

How I want it:

14
14845×571 28.2 KB

What I tried in the editor.php:

  'panel.page.read'     => function() {

  if($this->user()->is($this->target()->user())) {
    return true;
  } 
}

But it does not work…

2

How do you know what pages a user may see? Is there any pattern, like a template, a field or whatever which determines what a user may or may not see?