You can inactivate a trigger if it is not used. You can activate the trigger if you decide to use it again.
1. Choose Tools > Administration > Automation Rules.
The Configure Automation Rules dialog box opens.
2. Click the Triggers tab.
3. Select an item Type. The items change based on the selected type.
4. Select a rule and click Inactivate.
The trigger is inactivated.
Note: To activate an inactive trigger, select the trigger and click Activate.