By default, behavior rules remain active for 24 hours a day. However, you can customize this schedule within the General Settings tab of the Rule Editor by using the Time when rule is active section:
To define your custom rule schedule, simply drag the two small Orange Circles 
on the slider to adjust the start and end times. This ensures the rule is only enforced during the specific periods you require, such as active work hours, while remaining inactive during lunch breaks or off-hours.
Resources:
For general information about behavior rules, check out the Configurations > Behavior Policy > Rules section of the User Guide.
For in-depth discussion about rules and how to use them, check out the Rules Guide.