Setup Slack app. If you have already setup, So skip it
Setup multiple Slack teams for a Confluence Space
Navigate to Space tool in given Space
Click on Slack tab
Click on "Connect" button
Choose your wish slack team at right top corner . My sample is "Slack Connector"
Click on "Authorize" button at bottom then you able connect "Slack connector" team to current Confluence Space
Click on "Connect" button , then choose other Slack team at top right dropdown
Now you are able to connect multiple Slack teams in to your current workspace.
