Start and end date via constraints

Hi, I would like to define the start of a task via a constraint, for instant Finish - Start and at the same time define the end of the task also via a constraint, for instant Start - Finish. The duration of the task should then be computed. Is there a way to do that?
cheers
Martin

No such feature, sorry.

Hi,

thank you very much for your quick reply. I like your software a lot.
Would it be possible to add such a feature?

cheers
Martin