Hi everybody.

In my project, I have only one task (TASK1), and I think it will last for 10 days.

I assigned three resources to TASK1: Supervisor, Employee and a Diver.

• Manager works only 2 hours a day in my project (he is the project supervisor and he splits his time in more other projects).
• Employee is a full-time employee in TASK1, and he works 8 hours a day.
• Diver is a employee that works 4 hours a day at the bottom of the sea (you know, divers have their inmersion time limited; once they have done their hours, they have to rest).

As I said, I think the TASK1 will last for 10 days because the full-time employee needs 80 hours to complete the work.

The other two resources, when are working, they are simultaneous to the full-time employee, i.e., they do not replace the full-time employee, they work together at the same time, but two of them go back home or other places home sooner.

So here come my questions (I have red the documentation and some other posts, and after playing a bit, I can not see it clear yet, sorry):

1) Let's suppose I want the task to REMAIN lasting for 10 days no matter the quantity of resources I assign to it. But I assigned the Manager (who works 2 hours a day) and only the manager, and the duration of the task changed from 10 days to 2,5 days... I want the task to last for 10 days, how could I lock this duration?. If I change the task duration again to 10 days, I find that the Manager has suddenly 80 hours assigned instead of 20 (he only works two hours a day!). What am I doing wrong?.

2) I changed the calendar of the Manager, and I declared he would work for 2 hours a day, 10 hours a week, 20 days a month. When I was back to the Gantt, the duration of the activity was suddenly from 10 to 40 days (80 hours / 2 hours/day = 40 days). I declared a 2hours/day calendar for the Manager and everything was alright again... BUT:

3) I introduced a new resource, the full-time employee, and I DID NOT assigned him to the TASK1. I declared a 8 hours/day, 40 hours/week and 20 days/week for him, and when I went back to the Ganntt, the duration of the task had changed again... but I do still want the task to keep its 10 days duration. What am I doing wrong?...

I think there is a big mess of calendars and tasks in my mind, and the program is not clear about this point, about the relations between task duration and hours of resources... Can you enlight me a little please?, thank you very much in advance.