Setting an In Effect Date at Rule Level
As a default, the rules of a decision table are always in effect. You can set an in effect date at rule level or at decision table level. If you set an in effect date at rule level, it only applies to this rule. If you set an in effect date at decision table level, it applies to all rules of this decision table. In effect dates at rule level supersede in effect dates at decision table level.
To set an in effect date at rule level:
2. In the In Effect column, select the cell you want to edit.
3. Do one of the following:
a. To specify a date and time in direct edit mode, click the 
icon and select a date. Enter a time (optional). b. To specify a date and time with the cell editor, click the 
icon. In the Condition Value Modification dialog box, select an operator as described in
About In Effect Operators, and enter a date and optionally a time in the Literal tab. Click OK. Note:
If you select a range operator, the dialog box splits so that you can enter a time range.
c. To set Always or Never as in effect date, right-click the cell and select 
Assign Operator > ALWAYS, or Assign Operator > NEVER from the context menu. Note:
Note that you can copy and paste dates from the in effect cells to other cells and vice versa.