Overriding an If-Then Rule 
If there are two if-then rules and you want only one if-then rule to be executed and the other rule to get ignored, you can override one rule over the other.
A rule can override more than one rule. You cannot change the priority of a rule that is used to override other rules.
Procedure
Locate the ruleset and double-click a ruleset node.
For more information, see Locating the Ruleset
The ruleset editor appears with the Overview tab page open.
In the Rules in 'ruleset' section, in the context menu of a rule name, choose Override Rule.
In the dialog box that appears select a checkbox with a corresponding rule name.
NoteIf you select the checkbox with a wildcard character*, all rules with the same or low priority will be overridden.
End of the note.Choose OK.
You should see the overridden rule name in the Overrides column.
Note
To edit an override,in the context menu of a rule name, choose Override Rule.