how to set some pages open toc

[361way]

if the mkdocs.yaml file setting like this, i didnot open the toc on the right part of the page. but i want open it in some pages. how can i do it ?

theme:
  nav_style: "horizontal"
  nav_levels: 2
  name: material
  highlightjs: true
  title_order: page_title,title,filename
  palette:
    primary: teal
  features:
    - navigation.tabs
    - navigation.path
    # - navigation.expand 
    - navigation.instant
    - navigation.instant.prefetch
    - navigation.top 
    - content.code.copy
    - navigation.footer
    #- toc: true
    - toc.integrate
    - sidebar:
      hide_on_mobile: true

i check the document like this in the official website . only have the hide navigation and toc . but i don't know how to open in a single page

---
title: 
description: 
date: 
tags:
  - test
 features:
  - toc: true
---

i am try doing like this in the head of a mardown page, but it is not work.

[alexvoss]

The settings in the page header are not a general mechanism for overwriting settings from the config, I am afraid. I am not aware of a way to turn the ToC back on selectively when it has been integrated.