Once a field has been configured, you may re-open and edit the plugin's Configuration dialog:
| • | Select Configure field from the right-click pop-up menu or  | 
| • | with the Field dialog open, right-click the field in Tree and select Configure field... from the pop-up menu. | 
To enable/disable plugins:
| • | Tick/clear the Enable plugin check-box on the 'Layout' page of the Field dialog or  | 
| • | Click the Plugins button on the Tool-bar:   indicates 'enabled' and   'disabled'. | 
| • | Select Enable field or Disable field from the right-click pop-up menu. | 
 Note
If a plugin attempts to modify a PDF document that is marked as not editable then the corresponding field is disabled and a warning given.