add /en/utol/students/integrations/slack/

src/pages/en/slack/index.mdx

@@ -61,6 +61,7 @@ Workspaces in UTokyo Slack are created upon request from faculty and staff. Plea
 ## Others
 
 ### Notes and details
+{:#precautions}
 
 - For preactions on using UTokyo Slack, please refer to "[Precautions for using external services managed and operated by Division for Information and Communication Systems](/en/docs/dics-terms/)".
 - Please refer to the "[Detailed specifications and settings for UTokyo Slack](details/)" section for details on specifications unique to UTokyo Slack (Slack's "Enterprise Grid" plan) and functions that are restricted by the organization settings.

src/pages/en/utol/students/integrations/slack/index.md

@@ -0,0 +1,26 @@
+---
+title: Using UTokyo Slack workspaces in UTOL with Slack integration
+breadcrumb:
+  title: Slack
+---
+
+## Overview
+
+Slack integration feature on UTOL provides a dedicated UTokyo Slack workspace for course members, including course instructors and enrolled students. Once the instructor activates this integration, students can use the workspace to communicate with their instructor and fellow students.
+
+## Preparation
+
+If you have not yet completed the [Information Security Education](https://univtokyo.sharepoint.com/sites/Security/SitePages/en/Information_Security_Education.aspx) and/or enabled the [Multi-Factor Authentication for UTokyo Accounts]((/en/utokyo_account/mfa/)), please do so.
+
+## How to use
+
+1. Click the "Slack" in the "External Tool Link" on the "Course Top" screen.
+   ![](utol-slack_integration.png)
+1. Use Slack via the Slack app or a web browser.
+   ![](slack-login.png)
+
+## Supplemental Information and Notes  
+
+- Once the Slack integration is activated, participants of the course will be automatically invited to the associated UTokyo Slack workspace through a synchronization process that is executed hourly. Therefore, if you already use UTokyo Slack, you may be added to the workspace without you going through the process of joining.
+- The workspace will automatically become inaccessible 30 days after the end of the course period.
+- For precautions on using UTokyo Slack, please refer to "[Notes and details](/en/slack/#precautions)".