Setup roster times for a location under Roster > Roster Settings > Roster Times.
Enter the times during which employees will be rostered, and turn off days when the location is closed. If you have more than one location, use the arrow down to select another location.
When viewing the roster, the times outside of roster hours will be greyed out or marked 'Closed'.
Note: Roster Hours can be different from Trading Hours which can be setup under Home > Settings > Business Information > Trading Hours.