Group level slack Integrations

Hello Team,

I would like to request GitLab docs for Group level slack integrations if there are any. I saw many issues that got closed on the Group level slack integrations like this Group-Level Slack integration (#13961) · Issues · / GitLab · GitLab. But I did not find the proper documentation on how to integrate slack at the group level. Please help me to find the correct documentation

can someone help on this