title: How to create notification system Use Case diagram
body: <p>I want create Use Case diagram for a notification system</p>
  
  <p>In this system I have two actors <code>admin</code> and <code>user</code> ,</p>
  
  <p><code>admin</code> must first login in to the system then can add new notification and can edit it.</p>
  
  <p><code>user</code> must first select the type of notification that it wants to receive, and then can show the notification.</p>
  
  <p>These are my actors and use cases:</p>
  
  <p><a href="https://i.stack.imgur.com/jSuvB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jSuvB.png" alt="Use Case diagram"></a></p>
  
  <p>But I don't know about the relationship between them,
  How to do it?</p>
  
  <p>It's true?</p>
  
  <p><a href="https://i.stack.imgur.com/DbLHm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DbLHm.png" alt="exm"></a></p>