Login to your Trello account
Open a new tab and go to ttps://trello.com/power-ups/admin/
Click "New"
Fill up the fields (Iframe connector URL is optional)
Click "Create"
Click "Generate a new API key"
Click "Generate API key"
On the "Allowed origins", add "https://app.hierarch.io" (w/o trailing slash)
Go to your integrations panel and paste the API key
A pop-up will open, scrolldown and click Allow
Click "Connected to App" checkbox
Go to one of your boards
Copy the board id
Paste these on the Settings tab, on the integrations panel
Go to Actions tab