Changing Date Effectivity 
The effectivity option for a rule helps you execute rules at runtime. To control the runtime rules execution, you can specify the period of time in which a rule should be valid and effective.
For more information, see Creating an Effectivity
Prerequisites
The effectivity must be created in the Rules Composer.
Procedure
In the Rules Navigator view, expand the project node and select the ruleset or flow ruleset.
The ruleset or flow ruleset overview page opens in the Editor Window.
Under the Rules section, select the rule and choose Open.
The rule opens in the Editor Window.
Under the General Information section, select the value next to the Date Effectivity field.
In the drop down menu that appears, choose the effectivity.
The drop down menu lists the date effectivities created in the Rules Composer.