another question from my Blog reader: “How do you determine whether to create a task calendar or a resource calendar?
For example I start off with setting up the project calendar as standard, and then I decide that a particular task needs to be worked on over a weekend. If my resources normally work the standard hours, do I create a task calendar?
Or do I go into the resource calendar for that resource and create an exception for that weekend?”
The answer is: It depends of your Task! Let me give you an example. Resource Calendar has purpose to establish working time, and non working time for some resources. So when you assign Resources to some Tasks, Start and End Date depend of Resource Calendar.
Let me show you that in MS PROJECT 2013.
Let’ say that I have resource Nenad and that I’m freak, and I am going to work every day (including Saturday and Sunday).
I will arrange Standard Calendar for me:
If I add Task to my Project with 5 days durations it will looks like:
As you can see it will start at 10.07.2013 (Wednesday) and it will finish at 16.07.2013 (next Tuesday). But, when I assign Nenad to the Task it will looks like:
As you can see now the Task will start at 10.07.2013 (Wednesday) and it will finish at 14.07.2013 (Sunday). Why? Because Nenad will work at weekend. But Let us suppose that we have another Resource, Mary, with Standard working Time (e.g. no work for weekend), and that she will work with Nenad on the same Task:
As you can see it will start at 10.07.2013 (Wednesday) and it will finish at 16.07.2013 (next Tuesday), like at the First example. Why? Let’s look at the Task Usage View:
As you can see, Nenad will work at Wednesday, Thursday, Friday, Saturday and Sunday, but Mary will work at Wednesday, Thursday, Friday, Monday and Tuesday.
And if you have this particular Calendar for Nenad it will be applied to all Tasks.
Let me now say that I have Task called Weekend Task. And it has to be done only at Saturday and Sunday.
I’m going to cerate Task Calendar:
Finally I’ll assign this Calendar to the Task:
and I’ll get:
As you can see duration is 4 days, but it will spread across two weekends (13.07.14.07, and 20.07-21.07)
Now let’s suppose that we need Mary for that Task:
Huston, we have a Problem. Since Mary doesn’t work at weekends, we have a conflict. What Can we do? We can leave it as is, and we will get:
Or we can say that we don’t care about Mary’s working time for that Task like:
Now I can assign Mary and I will have no warning!
So, to conclude. If you want some Task to be done on Particular days of the week, no matter of Resources, then yes, use Task Calendar!