Final answer:
The default start and end time settings on the calendar can be customized by the user.
Step-by-step explanation:
The default start time and default end time settings on the calendar options can be customized by the user. This means that the user can choose the start and end times that they prefer for their calendar. It is not fixed to a specific time range such as 8 AM to 5 PM. The user has the flexibility to set their own preferred default start and end times.