1 - First you need install this component in your environment;
2 - Go to your slack area (https://api.slack.com/apps/) and create one application;
3 - In the OAuth & Permissions tab, add the scopes to read channels and write messages (Find the scopes in the api method page);



4 - Install the application in your slack environment;


5 - Copy the bot user OAuth Access token and update the BotAccessToken site property value in service center;
6 - Now you are able to get a list of your channels and send messages for slack channels.

More information
- Slack api methods: https://api.slack.com/methods
- Message builder to personalize message: https://api.slack.com/docs/messages/builder