Hi Chris,
Do you use the Client Tool, the Web Tool, or both?
With the Client Tool, I believe that your options are limited, or in other words, I don't think that it can be done. PTC support can chime in to give other possible options.
If you're using the Web Tool, you can take much more control of the UI using JavaScript, HTML and CSS and actually accomplish exactly what you're describing. It's not for the "faint of heart" however, and an approach that is not "officially supported" by PTC.
If you're using the Web Tool, you also have the option of creating a custom JSP page to accomplish this as well. Which is an approach to customization that is better aligned with PTC's support policies. Of course, this approach comes with its set of pros and cons as well.
If you'd like an "Out ot the Box" supported approach, you can create a report with your own custom HTML and JavaScript that provides the feature that you need. This solution isn't integrated into the UI and on a separate tab as you're describing. But it is is a mechanism to accomplish something close.
Good luck with your project
-Sean