How to add contextual help tabs with sections

I know how to filter contextual help to add a single pane of help to a screen, but I’ve noticed help tabs where there are a number of sections which link to different help snippets. The Pages menu has Overview and then Managing Pages for example. How can produce this format of contextual help?
What I currently do is…
add_action( ‘contextual_help’, ‘my_page_help’, 10, 3 );
function my_page_help( $contextual_help, $screen_id, $screen ) {
// check the screen id and add the help
}