Use the Hours per Time Period dialog box to define the calendar's default number of hours per timeperiod. For activities and resources to which the calendar is assigned, these values are used as conversion factors when users enter or display units and durations in time increments other than hours.
Hours/Day: The default number of hours per day for activities and resources to which the calendar is assigned. Valid range is 1-24.
Hours/Week: The default number of hours per week for activities and resources to which the calendar is assigned. Valid range is 1-168.
Hours/Month: The default number of hours per month for activities and resources to which the calendar is assigned. Valid range is 1-744.
Hours/Year: The default number of hours per year for activities and resources to which the calendar is assigned. Valid range is 1-8784.