What does operating hours vs fixed hour mean for labor rules?

Operating Hours- Means the labor rule will be based off the operating hours of the store. For example you would say 1hr BO (before open) to 1hr AC (after close) . This would be based of each stores business hours setup under the settings tab.

Fixed Hour- Means the labor rule will be based off of the specific hour set. If you want the rule to start at 11am until 11pm . It will only look at the labor drivers between 11am -11pm for all stores not taking into account a store that may be open until midnight or possibly opens earlier than 11am.