title: How to group users roles in Meteor Js
body: <p>Can someone help me to solve this problem? I want to assign multiple users to become admin for each category. </p>
  
  <p>For example I have collections:</p>
  
  <pre><code>User:{emily, bob, roberts, alex}
  
  Category:{Laptop, Computer, Tablet, Network}
  </code></pre>
  
  <p>How can I assigned roles for emily to become admin for Laptop and Computer? Besides, Bob and Alex are admin for Network?</p>
  
  <p>Your kindness and help really appreciated. Thanks.. :)</p>