Testing Scheduled Actions and Transitions
To test workflows that include scheduled actions or scheduled transitions, set the Delay and Unit fields to the smallest increments possible. This reduces the amount of time before the scheduled action or transition executes.
The following screenshot shows the Schedule options for an action or a transition:

The NetSuite scheduler runs scheduled actions every 30 minutes. Depending on the time you save the settings, the largest amount of time until the next scheduler run is 30 minutes.