The Nintex Automation Cloud connector does not support task assignment delegation. This is a supported action in the NAC API (https://developer.nintex.com/docs/nc-api-docs/94907225d0e8f-delegate-a-task-assignment).
Please add the delegate a task assignment action to the Nintex Automation Cloud connector.
Thank you very much for posting your feedback for our review. At this time, we will not be adding this request to the near-term backlog, as we are focused on other highly requested features. However, we reevaluate requests every quarter and will reach out if priorities change. Please keep the feedback coming as it is critical for our longer-term planning.