OK seems to be the only solution

one more question, how would you handle tasks that the assigned person have to do within two weeks, but its accualy a day work, you dont care when he does it, but he has to be done till a certain day, is there a way how to have the start of the task and end as two weeks but the task him self is a days work?
Or ist the best way to make it a two weeks task and assign the resource as for example 5%?