You firstly create an API key in the Admin app. You can do this by clicking on the menu button (1) in the top left corner and selecting the menu item “Company”.
This will guide you to the Company details page. Select the API keys tile.
Click on the 
(2) icon and select “Generate API key”.
Give the API key a descriptive name. In this example we use “Grafana”. Click on the button “Generate” (3).
The following screen will appear.
Copy or download the API key using one of the icon buttons (4).