To enable GitHub Pull request comment, navigate to Project -> Settings, scroll to GitHub Pull Request comment section and click Enable. To add comments to a Pull Request, the installation will require GitHub repository
pull_request:write permission (required during the GitHub application installation).
To enable Slack notification, navigate to Project -> Settings, scroll to Slack Notification section and click on Add to Slack button to start the Slack application installation flow.
To invite team members to follow your project, navigate to Project -> Settings -> Users and click on Invite users.
Copy and share the URL with your team. The user GitHub account needs to have GitHub access to the project repository to follow the project.