How to split the Tasks in MS PROJECT 2010, and why!



it is Friday, and this post will be a short one!

Suppose that you have a project with 5 tasks as is shown in the picture:

Primjer 1 26.04.2011

Task 3 has a 3-day duration, and will start on Monday, 25.04.2011 and finish on Wednesday, 27.04.2011. What if your task can be done in 3 days but it must (for any reason) be scheduled on Monday 25.04.2011 then Thursday 28.04.2011 and finally on Tuesday, 03.05.2011.? You can make three different tasks but this is not a good idea. A better approach is to split the task. Here is how con you do it:

Primjer 2 26.04.2011

After you click on Split button move the cursor on the Gantt chart and click on Tuesday, 26.04.2011 and drag the task on Thursday 28.04.2011:

Primjer 3 26.04.2011

and you will get:

Primjer 4 26.04.2011

You can see that duration of task 3 is unchanged but the start date and end date was changed for Task 4 and 5 because Task 3 is predecessor of Task 4 and Task 4 is predecessor of Task 5.

Now I will split the same task so the last day is Tuesday 03.05.2011 and I will get:

Primjer 5 26.04.2011

Again, duration of task 3 is unchanged but the start date and end date was changed for Task 4 and 5 because Task 3 is predecessor of Task 4 and Task 4 is predecessor of Task 5

What if you change your mind? You can “resplit” the task in the same way. Click on the split task back until it is connected again (drag from right to the left):

Primjer 6 26.04.2011

And the task is joined again.

Remember that a dotted line does not represent duration. Nothing is happening in the dotted line period. If you want to remove dotted line you can do it like this:

Primjer 7 26.04.2011

and you will get:

Primjer 8 26.04.2011


You can see that a dotted line is removed. This picture on the Gantt chart is little confusing because you have a task with a 3-day duration that will start on Monday 25.04.2011 and finish on Friday 29.04.2011. Without a dotted line you can think that this is an error, so I strongly suggest: Leave a dotted line in your Gantt chart.

I have got a question: “Is it possible, for example, Link Predecessor Task, as Finish to Start relationship, with second, or third part of Task has s Slip?”. The answer is NO! Why, because it is ONE TASK, not two or three of them. If you have to do that, you should create two of three different tasks!

From my next post I will start to examine what would happen if I add or remove additional resources to the same task, different Task types, and how to understand this.

You should expect the Headache!

Have a nice weekend!


About Nenad Trajkovski

Location: Zagreb, Croatia Occupation: Project Manager Interests: Project Management and MS PROJECT He was born in Zagreb, Croatia at 1963. After completing his college he started working on projects in different business areas (banking, manufacturing, automotive industry, distribution, oil companies, etc.) developing and implementing ERP systems into different companies. He has got a lot of experience working with people in different business processes and also possesses great knowledge in information technologies and financial services. Today he works as a business consultant, adn Project Manager in PERPETUUM MOBILE d.o.o. Zagreb. He is a regular lecturer for Project Management in MS Innovation Center in Varaždin, Logosoft Sarajevo in Bosnia and Herzegovina and SEAVUS GROUP in Skopje Macedonia. He was named the best lecturer of WINDAYS 2008 while his lecture was also voted as the best. In addition, he was in TOP 10 lecturers at the MS SINERGY 2009 and MS VISIA 2009, 2010. Shares first place as the best lecturer of KulenDays 2009 and 2010 and PMI Conference 2009 in Zagreb. He is also a regular lecturer in the MS Community. He is a Certified Accountant and a PMP (Project Manager Professional) and a PMI-RMP (Risk Manager Professional), MCP, MCT, and Microsoft Certified Technical Specialist - Microsoft Project 2010. From 01.01.2012 awarded with MVP (Microsoft Most Valuable Proffesional - Microsoft Project)!
This entry was posted in MICROSOFT PROJECT, Microsoft PRoject 2010, MS PROJECT 2010, MS PROJECT 20101, PMI, PRoject Management and tagged , , , , . Bookmark the permalink.

6 Responses to How to split the Tasks in MS PROJECT 2010, and why!

  1. Toopik says:

    Very helpfull

  2. Sheila says:

    Very helpful, Thanks!

  3. Luke Ivaluvou says:

    I split the original task and want to link from within the split out to the new task back to the remaining part of the split task

  4. Lalit Jain says:

    Dear Nenad,

    I defined a cost resource “Hotel” and a work resource “Thomas” with hourly rate of 50 USD. For both of these resources I selected the accrue at “Start”.

    I defined a task of 1 day duration and assigned Thomas to it. I also assigned 200 USD of Cost Resource “Hotel” to this task. Then I saved the baseline with baseline cost of 600 Dollars.

    When I make the task 50% complete, the Actual Cost only shows the Cost of work resource. Even when the task is 100% complete, the actual cost only reflects the cost of work resource.

    The behavior remains same even if the accrual method is changed to “Prorated” or “End”.

    Can you suggest a work around?

    Lalit Jain, Dubai

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