1. First, you'd have to obtain your very own ModernMT license at https://www.modernmt.com/pricing/
2. Once you get a license, go to Intento Console (https://console.inten.to/) and click Connected Accounts tab on the left (you need to have at least an MT Expert subscription level with Intento)
3. Scroll the list of MT providers down to until you see Modern MT Human-in-the-loop and click on it
4. Click "Connect your own account":
5. Put out the credentials name in the CredentialId field, it could be used later as a credential alias in API calls
6. Specify your ModernMT API key as"key" parameter. The key can be obtained in ModernMT Dashboard.
7. "URL" field should be filled with https://api.modernmt.eu
Please make sure it contains https:// and does not contain extra spaces and/or quotation marks
8. Press CHECK AND CONNECT
9. Select this account as "default" to use this account for all the translations routed to ModernMT.
Now, you are all set to use ModernMT account with Intento