LinkedIn for Jomsocial is the professional way to integrate your linkedin user or company profile inside your jomsocial based website Main Content Position.
If you are planning to maximize and expand your linked-in connections you can publish this plugin with user override set to NO, this will force the extension to just show your linkedin user or company profile inside all jomsocial user profiles. But, if your intention is to allow all your jomsocial users to display their own linkedin user or company profile inside their own jomsocial user profile, then in the administrator plugin backend, set the plugin to YES.