Puzzled about where to enter Intel AMT connection credentials? (You're not alone.)
Here's the (step-by-step, detailed, and most probably accurate) Juice from Joel Smith, an esteemed member of the tech support team.
One important thing to note is that when OOB connects to an Intel AMT device, it tries all connection credentials known to the Solution: Connection Credentials found in places 1 to 6. Having the correct credentials stored at one of those locations is sufficient to successfully connect to a device.
All connection credentials are prioritized: for example, the settings that worked for the specific computer marked as Excellent and stored in 6. Next time you run a task against the same computer, the settings marked Excellent are tried first. There are six priority levels for connection credentials and credentials' priority may change dynamically every time a task is run depending on what credentials succeed or fail during the execution.