Wait for an item update
Delays the workflow until a property (list or library column) of the current item meets a specified condition.
Options for this action
Wait for
The "Wait for" field allows a column in the list or library where the current item is located to be selected. This column's value will be the one that the following condition needs to evaluate as true against to proceed in the workflow.
Condition
The condition contains the comparison that must be true for the workflow to move past this action. A comparison operator and a value must be specified. Refer to Using lookups for more information.
Troubleshooting
Action not executing
The work load for this action is added to a job queue. The workflow executes jobs in the queue as a batch when it reaches a "commit" point. For more information, see the Nintex article "Commit Pending Changes in WOrkflow Design."