1. Select 'Add new tag' from the google tag manager workspace.
2. Click on the tag icon to select a tag type.
3. Select Custom HTML.
4. In the HTML box paste in the deployment script that you generated via Chat Designer: Deploy
5. Select the trigger icon.
6. Click the + icon to add a new trigger.
7. Select DOM Ready.
8. Name your trigger as you please and click save.
9. Name your tag as you please and click save.
10. Click Submit.
11. Click Publish.