### Description For single-tenant installations of GitLab, including the I2P demo, teams should be able to enable a single chat command integration (Mattermost or Slack) for the entire instance. This implies that the command structure for the chat commands would allow specifying specific projects. ### Proposal ### Links / references * Depends on ### Documentation blurb (Write the start of the documentation of this feature here, include: 1. Why should someone use it; what's the underlying problem. 2. What is the solution. 3. How does someone use this During implementation, this can then be copied and used as a starter for the documentation.) /cc @victorwu @mydigitalself @bikebilly