title: How to assign issue to myself at Github?
body: <p>I am asked to assign an issue to myself, the issue is created by someone else. I found this how to guide at <a href="https://help.github.com/articles/assigning-issues-and-pull-requests-to-other-github-users/" rel="noreferrer">help.github.com</a>.</p>
  
  <p>I can see the issue list indeed and I have the "exclamation mark with circle, open" for the issue, but I don't have the check box mentioned in step 4. The repository is not mine.</p>
  
  <p>How can I assign the issue? Do I miss any right?</p>
  
  <p>I just googled some words stating "Only admin can assign task to assignee", is that true?</p>