ChannelEngine

1. Go to your settings > Integrations page > create / add connection

and click 'ChannelEngine'

2. Enter your API key. 

You can find that under 'settings > support' in your ChannelEngine account:

On the top left, it says 'API'. Click on the Merchant API keys button to get your keys.

On the Attalos website, enter the key in the 'client ID' field and hit save. A new screen pops up where you can enter your subdomain - this is the part before 'channelengine.net'.

All good, and data loading will start shortly.