How to Change 5 Day Workweek to 7 Day Workweek calendar but keep Project Finish Date unchanged in Primavera P6

After 3 months of hard working, we finish a schedule with 5 Day Workweek calendar like picture:

Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged in Primavera P6-1

Then the Construction team said that “06-Mar-18 is the right Project finish date, but we’re talking about 7 Day Workweek, not 5 Day Workweek. Sorry pal, it must be a misunderstanding.”

What the he**?

Changing Activity calendar will change everything.

Normally, if we change calendar to 7 Day Workweek, all activity finish date will change like below picture:

Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged in Primavera P6-2

Now Project finish date is 25-Jan-18.

I will show you How to Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged.

Step 1 : Go to menu Enterprise -> User Defined Fields

Create a field called “Finish 5DW” with Data Type : Finish Date. And “Start 5DW” with Data Type : Start Date

Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged in Primavera P6-8

Step 2 : Go to menu Tool -> Global Change.

Create a Change “SaveTo5DW” with detail like below picture:

Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged in Primavera P6-9

Click “Change” button to copy value to “Start 5DW” and “Finish 5DW” UDF.

Step 3 : Change Activity calendar to 7 Day Workweek.

You can change calendar for the first activity then use Fill Down function to apply for the rest.

Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged in Primavera P6-5

Step 4 : Go to menu Tool -> Global Change.

Create a Change “LoadFrom5DW” with detail like below picture:

Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged in Primavera P6-10

Click “Change” button to copy value to Start and Finish date .

Now we can see all activity Start and Finish date doesn’t change, only the Activity Duration change. Project finish Date is still 06-Mar-18

Change 5 Day Workweek to 7 Day Workweek but keep Project Finish Date unchanged in Primavera P6-11

 

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3 Comments

  1. Hi Khuong Do,

    Very interesting and easy method for changing the 5D Calendar to 7D Calendar without changing the finish date of the project. I followed the same as you have shown. It worked exactly as described by you, but unfortunately at the end when i schedule the programme it will change the completion date of the Project and it is neither matching with the 5D Calendar nor with the 7D Calendar. Please confirm that weather I am missing something or really it happens.

    Like

  2. Hi Mr Khuong Do,
    Thank you for your website,

    Could you help me Sir,
    how to create/show in primavera P6 progress last week?
    for example my progress this week is 15%, and progress last week is 10%.
    I want to show the progress last week & progress this week in primavera.

    Thank a lot Sir,

    Ranto

    Like

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