Microsoft Project Set The Calendars

Set the calendars 

When you first start using Microsoft Project the default settings on the software are an eight hour day and a forty hour week.  

If you do not need to resource cost the project or exact working times for the project plan, then whether you plan on a forty hour week or a thirty seven and a half (or any other value) doesn’t really matter as the information required is on dates.  In which case you do not need to worry about the exact hours on a day by day basis and you will only need to add the non working days ie the bank holidays.

If you do need to resource cost the project plan or need exact hours to be worked on each task then it is very important that the calendar reflects accurately the hours scheduled to be worked.

To make changes to the standard calendar for the project plan:

Menu, Tools, Change Working Time



At the top, make sure the calendar that needs to be changed is selected.  As default the calendar that is selected in the project information is the one that is displayed automatically.

Bank Holidays or Non Working Days 

To enter non working days into the calendar

1. Select the Exceptions tab on the Change Working Time Dialog box.

2. Click on the date of the non working day

3. On the exceptions tab type in the name of the non working day, such as New years day.




5. Select Working Times

6. Either change the Working Times as necessary or highlight the row to delete the times.  If the top row is deleted it will automatically move the row below up.  (This used to have to be done manually in earlier versions of Project.)

7. Click OK to return to the previous screen.

Change the Size of the Working Day 

If the size of the working day and week need to be changed, then this can be done on the Work Weeks tab in the Change Working Time Dialog box.

1. Click on the Work Weeks tab

2. Select [Default]

3. Click on Details




4. Highlight the days to be changed by clicking on the first one, holding down the shift key and clicking on the last one.

5. Change the setting on the top left to specific working times

6. Change the hours.

7. Move off the cells changed (if you don’t move off the last cell changed, then that change will not be made, even though the other ones will)

8. Click on OK

This changes the hours to which any tasks will be applied.  It does not change the size of the day that is used to calculated the duration of the task.  It is very important that the two correspond correctly otherwise the software will not plan the tasks correctly.

To change the size of the working day can be done via the

• Menu, Change Working Time, Click on the OPTIONS button

or

• Menu, Tools Options and the Calendar Tab.

Both options take you to the same screen, where you need to enter values so that they match the settings that have been entered on the Change Working Time.  

This should only be done for the calendar that is the default calendar for the project.