How Time To Reply handles business hours when calculating email response times.
For example, if your business hours are 9am to 5pm Mon - Fri and an email comes in at 8:30am on a Monday morning and one of your agents replies at 9:15am, the system would view that as a 15 minute response time and not a 45 minute response time as the first 30 minutes were outside of business hours.
To edit your account business hours go to your name on the top right > Account Settings > Business Hours and Leave Management > Edit Business Hours. Update your business hours and click save.
Business hours can also be set on an individual mailbox level by going to Your name on the top right > Mailboxes > Actions > Edit (Next to the mailbox that you would like to set business hours for). You will then see the option to add the specific business hours for that particular mailbox.
You can set your business hours to 00:00 and 24:00 to exclude business hours altogether and track around the clock if you want to.
Note: changing your business hours will only affect new data and have no effect on historical data.