Right Click Issues

Summary

Some Agents can't right click

Content

Our agents go into their cues and pull up a list of incidents, some of my agents can right click on a column to see a menu of options.  They like to do this to hide columns they don't see.

But I have others that right click, but the menu wont appear.    This has to be something in security.   I'm able to give myself their profile, and I can't right click either.

Does anyone know what might control that?