Click thethe Interactive Components link in the menu
ClickClick Enable Interactive Messages, enter Request URL and click Enable Interactive Messages The Request URL must be publicly accessible and secure.
Click thethe Bot users link in the menu.
ClickClick Add a Bot User, enter Display name and Default username and click Add a Bot User
Click thethe OAuth & Permissions link in the menu.
Go to Redirect URLs section click Add a new Redirect URL, enter Redirect URLURL and click save changes. The Redirect URL must be publicly accessible and secure.
Go to scopes section and select “Administer the workspace” scope and click save changes.
Click on thethe Install App to Team button found on the Install App If new permission scopes or Slack app features are added after an app has been installed, app has to be reinstalled to workspace for changes to take effect.
Once the app installed, the access token will be generated in OAuth & Permissions page