Google Chat Error

Questions
21

Hi, I’m currently having an issue with adding an app to my Workspace organization. I’m getting the following error:

Forbidden - perhaps check your credentials?
This organization’s administrator must allow users to install this Chat app

Error details
From Google Chat
Error code: 403

Full message:

{
  "error": {
    "code": 403,
    "message": "This organization's administrator must allow users to install this Chat app",
    "status": "PERMISSION_DENIED"
  }
}

Could someone advise where this needs to be configured so that the app starts working properly? Has anyone had a similar problem and managed to solve it?