Manage Work Calendars
Click the gear in the upper right to open the configuration menu.
Click Work Calendars in the configuration menu to manage your work schedules for different teams.
Go to Add New Calendar and create a new setting or edit, copy and delete existing ones.
After clicking Add New Calendar button, you can choose:
the amount of working days a week
the amount of working hours per day
every day breaks
the days when your team is on holidays.
Also, you can add a name to each calendar.
The time, which was spent on issue in every status, will be calculated according to the specific calendar you choose.