Hi,
I would suggest you to look through code for specific label to find out how it's done. Go into admin panel, choose one label from buttons and look up a code for it. E.g. "Title and logo" [case sensitive]
Omit langpacks (en.php, de.php, etc)
and you will find file modules/Base/MainModuleIndicator/MainModuleIndicatorCommon_0.php with method
public static function admin_caption() {
return array('label'=>__('Title and logo'), 'section'=>__('Server Configuration'));
}
So in common file of your module, create static function admin_caption and return array with label and section. You can put any text in section and new section should show up.
Regards,
Adam