Hi.
Today I will show you what happens when you put work in hours to the Tasks, and then assign Resources to the Task, using MS PROJECT 2016. Firs II ‘m going to create new Project:
As you can see, I have modified the Gantt Chart View in a way that I added Type, and Work fields. For all three Tasks I know that 40 hours are needed to complete this work.
I have three Resources in My Project:
Now I will switch to Task Usage View:
I have modified this View too, and I added Resource Names field. Now I am going to assign Resources to each Task:
As you can see, now the Magic Formula takes a place: Work = Duration * Units, e.g. Duration = Work / Units.
Fixed Units Task Type, and Fixed Work Task Type has Duration 5 days, because Duration = 40 / 100% (8 hours per day) = 5 days. But, Fixed Duration remains 1 day, because it is Fixed, and Mary should work 40 hours in one day which is impossible. So, when you have Fixed Duration Task Type DO NOT put hours in Task, but in Resource assignment. Why? Because when you have Fixed Duration, you should tell MS PROJECT how many hours in that duration should each Resource work, and in a Task put Duration instead of work. Then MS PROJECT knows Duration for that Task you want. It doesn’t make a sense to have Fixed Duration Task Type, and do not put that Duration in Task, does it?
Regards.
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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)!
Nenad Trajkovski 
Nenad, I start with Fixed duration tasks, then I apply Resources from “Resource Pool”. The work calculation is correct: Work (Hours) =Units (%) x Duration (days) Then I save my project file. When I re-open it, the Resources have changed. It makes no sense. Can you help?
Also I can’t log in anymore. Am I going crazy?
On Tue, Feb 23, 2016 at 12:30 AM, Nenad Trajkovski wrote:
> Nenad Trajkovski posted: “Hi. Today I will show you what happens when you > put work in hours to the Tasks, and then assign Resources to the Task, > using MS PROJECT 2016. Firs II ‘m going to create new Project: As you can > see, I have modified the Gantt Chart View in a way that I add” >
I have no Idea what is going on. This is odd.