I’m not certain, but I would expect that those subpanels would not be displayed if you disabled those features in the Role Management for the Role(s) assigned to those Users. They would also disappear from the menus, which is helpful since it removes some clutter.
Role Management is probably available only to the System Administrator; as that User, you’d click on “Admin” from the menu at upper right, then choose “Role Management.”
I’ve attached a screen-capture showing how I disabled some features for a role in my test configuration (disabled the “Bugs” and “Case”-related features).
Can you be more specific than “not working here”? Were you able log in as admin and make these changes in Role Management for the Role assigned to your boss? What changes were made, and what result? Some screen captures might help also.