Allocating multiple resources to a task and splitting the hours

[pptdgc]

Hi there,



I have a number of tasks in MS Project where I need to assign multiple resources but I don't know how to configure this so the cost comes out correctly.

For example I have a task where I know we have 20 days to complete it. I also know the task will be 280 hours of work in total. I have therefore set this to a 'fixed duration' task type at 20 days duration and 280 of work. With the resource availability i know one resource will spend 144 hours on this and the other 136 hours during this 20 day period.

When I assign two resources it automatically sets the units per person as a percentage.

Is there a way I can just manually enter the number of hours each person will do? I need to do this so my costs add up.

Perhaps I have configured this wrong?

Thanks for the help