The business hours for each day of the week is specified individually and applies to the entire org
Each day has a checkbox which if checked implies that the org is operational on that day
If unchecked, it means no prospect can be distributed to the org on that day
For example, in the above screenshot, Sunday and Saturday are unchecked and therefore no distribution will be successful on those two day
The business hours for each day is set with the help of a slider beside the name of the day
The hours range from 0 to 24 hrs in military time format
For example, if the range is set to 19 hrs, it implies that the business hours are from 12 am to 7 pm
The hours can be updated at any time and clicking on the Save button will save the updates