Changing duration of task when adding more resource

Changing duration of task when adding more resource

Hi,

We have a list of tasks within a Project that we want to put an estimate against relating to how long it should take to complete. We don't do this at a very granular level so the smallest amount of time we need to track is normally half a day.

This allows us to create a timeline of what tasks will be finished when. With any task if I assign more than 1 owner I want Projects to reflect this by adjusting the end date appropriately and halving the Duration. I have tried various ways of entering this information but just cannot get it work. If I add another owner to a task it just doubles the Work Hours and leaves the Duration the same.

MS Project used to allow you to choose how you wanted additional resource to be handled. Does Projects have a similar setting somewhere that I have missed?