• Etic

• August 21, 2014 at 2:28 pm

Try this instead:

	if( function_exists('acf_add_options_page') ) {
		
		acf_add_options_page(array(
			'page_title' 	=> 'Options',
			'menu_title'	=> 'Options',
			'menu_slug' 	=> 'options',
			'capability'	=> 'edit_posts',
			'redirect'	=> false
		));
		
		acf_add_options_sub_page(array(
			'page_title' 	=> 'Page 1',
			'menu_title'	=> 'Page 1',
			'parent_slug'	=> 'options',
		));
		
		acf_add_options_sub_page(array(
			'page_title' 	=> 'Page 2',
			'menu_title'	=> 'Page 2',
			'parent_slug'	=> 'options',
		));
	
	}

Not need for an action hook.
Source: http://www.advancedcustomfields.com/resources/acf_add_options_page/