learndash_group_admin_page_actions

 <?php
/**
 * Example usage for learndash_group_admin_page_actions action.
 */
add_action(
	'learndash_group_admin_page_actions',
	function( $group_id ) {
		// May add any custom logic using $group_id

		echo '<div>Custom content or markup</div>';
	}
);