Reinstating this request as it is clear that delegation is required and not escalation.
An error occurred while saving the commentNorman Belen commented
The manual delegation is not there, this is needed when the assigned user is not available and needed to re-assign the task to another user right away.
20 votes1 comment · 3 - Nintex Workflow for Office 365 » Store / Actions · Flag idea as inappropriate… · Admin →
This is possible using the custom content type option in both task actions.
Here is a blog that tells you how.