Nintex o365 limitation

Hi,
Please be advised that Nintex for O365 is a completly different product to Nintex for On-premise. They may look similar but that is about as far as it goes.

1. i need to know about calculated filed on o365 foam.
A. What is it that you would like to know.

2. i also need to know where is formula menu in o365 workflow.
A. This feature does not exist.

3. where is review task action in o365 workflow.
A. There are only two Task actions available. Assign a task - for 1 assignee and Start A task Process for multiple assignees.