Symptom

In a system where JIRA has thousands of users, it could be tedious to only add 100 users at a time to a group.

Resolution

Use your web browser's Development Tools

Here's example on how to do this with Chrome's developer tools:

• As shown, the current limitation is to list 100 users at a time
  
  
  

• Right-click the the dropbox and select Inspect Element

  • The developer tools should pop-up
  • Remember to expand the selected class to see the underlying options
  
  
  
• Modify the value to something a larger value. In this case, it's been changed to 2000.
   
   
• Click Filter and notice that your the listing is now showing more than 100 users.