Calendars define the days and times that a resource will be scheduled to work on tasks . If a date in a resource's calendar is marked as a nonworking time, Project will not schedule work on that day. It will instead take the work that would have fallen on that day and move it to the next working day on the resource's calendar. Likewise, calendars define the time spans within a day that are available for work. If a resource's calendar says that her working day starts at 8 a.m., the resource will be assigned to a task starting at 8 a.m., even if that task is scheduled to start at 6 a.m. This is because the resource's calendar defined the hours between 6 a.m. and 8 a.m. as nonworking time.
Set a Date as Nonworking Time
Double-click on the resource for which you want to edit the working time.
Select the Working Time tab.
Select the date you want to make nonworking time.
Select the Nonworking Time radio button to make the selected day(s) nonworking time.
Dates that are nonworking time will be shaded gray, with their dates in bold and underlined .
Click OK.
Set Every Occurrence of a Day as Nonworking
Double-click the resource for which you want to edit the working time.
Select the Working Time tab.
Select the column header for the day of the week you want to make nonworking time.
Select the Nonworking Time radio button.
Here we see the results of marking all Mondays as nonworking time. The individual days are shaded gray, and the column header M is bolded and underlined.
Click OK.
Change the Working Times Within a Day
Double-click on the resource for which you want to edit the working time.
Select the Working Time tab.
Select the days for which you want to edit the working times. In this case, we've selected M “Th.
Select the Nondefault Working Time radio button.
Edit the From time if the 4-10 work week for this resource has him starting early. In most cases, this is 6:00 a.m.
Alternatively, edit the To time from 5:00 p.m. to a later time if the 4-10 work week for this resource ends late.
Double-click on the resource for which you want to edit the working time. 
Select the Working Time tab. 
Select the date you want to make nonworking time. 
Select the Nonworking Time radio button to make the selected day(s) nonworking time. 
Dates that are nonworking time will be shaded gray, with their dates in bold and underlined . 
Click OK. 
Click OK. 
