Guide

1. Click the '+ Add apps' menu.

2. Search for Trello and click 'Add'.

3. Select 'Add to Slack' button and follow the prompts to install the app.

4. You may need to log in to Trello

5. Choose an account to continue to Slack and click on it.

6. Click 'Add to Slack' to proceed.

7. Select the Trello workspace to link with your Slack.

8. To link your workspace Slack to Trello, click 'Add to Slack'.

9. Click the 'Allow' button.

10. You can choose specific channels for different boards and set which notifications you'd like to receive by clicking 'Allow'.

11. That's it! You have successfully integrated Slack with Trello.