This section applies to Union Cloud instances on AWS.
In the Execution view, selecting a task from the list in the Nodes tab will open the task details in the right panel.
Within that panel, in the Execution tab, under Logs, you will find a link labeled Cloudwatch Logs.
This is a deep link into the Cloudwatch system. Assuming you are logged into your AWS account with the appropriate role, you will be taken to the Cloudwatch logs specific to the container in which this particular task is running.