From the Automation Center navigation pane, select Triggers > <trigger type>. The Triggers list for that trigger type displays.

Right-click the trigger whose tasks you want to launch to display an Action menu.

The Trigger Time Zone field displays, by default, the time zone of the trigger, but you can change it to any time zone in the drop-down list for this particular execution of the trigger to run in.

If you want to put the task instances in held status when the tasks specified in the trigger are started, select Hold on Start.

If the Trigger Time Zone field displays in the pop-up, the Time Zone field, by default, is read-only and displays the time zone in the Trigger Time Zone field, since the Use Trigger Time Zone field is checked.
 
If you want the trigger to run in a different time zone for the selected Date and Time, un-check the Use Trigger Time Zone field and select a time zone from the Time Zone drop-down list.
 
The Trigger Time Zone and Time Zone fields allow the trigger to run as if in one time zone, and also allow the Date and Time of the trigger to be based upon another time zone. For example, you could execute Trigger Now... to run at a specific date and time with respect to the Time Zone, and yet the trigger itself will run based upon the Trigger Time Zone.
 
If the task is a Workflow, Trigger Time Zone lets you select a time zone for this specific launch of the Workflow so that it runs, and evaluates both Run Criteria and Execution Restrictions, according to that time zone.

You also can select Override Trigger Variables if you want to launch the tasks specified in the trigger while supplying values for variables used by the tasks (see Triggering with Variables).

Click Submit to launch the tasks named in the trigger. The variable information in the list is used where referenced in the tasks. After launching the tasks, the Controller deletes the contents of the list.