How Do I Add A New Tab To The Members Profile Main Tabs

Hi. I would like to add a custom tab to the list of tabs on a member’s profile page.

ie; Activity, Profile, Messages, Friends, Groups, Forums, Events, Settings, Pitches (my new tab).

In the main area not the sub-nav area.

Is there a plugin for that or do I need to edit a file. If so, which file?

Thank you.