As you can see profile edit page have various tabs like Basic settings. You may add custom tab like Bio component have own edit tab on profile edit page.

~~~
<?php
function my_component_init(){
ossn_add_hook('profile', 'edit:section', 'my_component_hook');
//you also need to register menu item
ossn_register_menu_item('profile/edit/tabs', array(
'name' => 'bio',
'href' => '?section=bio',
'text' => ossn_print('bio'),
));
}
function my_component_hook($hook, $type, $return, $params){
//$params['section'] contain the section type example 'edit'
//$params['user'] contains user instance
if($params['section'] == 'bio'){
return 'bio section contents';
}
}
ossn_register_callback('ossn', 'init', 'my_component_init');
~~~