If you plan to run a rule on a schedule, you need to enable it for scheduling by selecting the Schedule Based trigger type on the Rule dialog. (Note that, once you save the rule, you cannot go back later and change this selection.) After saving the rule, you then need to set up its corresponding scheduled task. You can define one or more scheduled tasks for the same rule.
To schedule a rule, select the rule on the group's, device type's, or 
 device's Rules tab and click Schedule  above the list of rules. The Schedules 
 dialog opens, with the details of the selected rule shown on the Rule 
 Details tab.
 above the list of rules. The Schedules 
 dialog opens, with the details of the selected rule shown on the Rule 
 Details tab.
By default, a scheduled task for a rule is an Enterprise task.
To create the scheduled task for the rule, click Add  to open the New 
 Schedule dialog. Complete the fields as needed and click Schedule. 
 (For field help, see Common scheduling 
 fields.) After a few moments, the Schedules dialog is refreshed to 
 show the new scheduled task.
 to open the New 
 Schedule dialog. Complete the fields as needed and click Schedule. 
 (For field help, see Common scheduling 
 fields.) After a few moments, the Schedules dialog is refreshed to 
 show the new scheduled task.
To remove a scheduled task for the rule, select it on the Schedules 
 dialog and click Delete  .
.