Guy An additional suggestion. Set the 3 operators up the same as you had the equipment. Meaning 10 hour days. Set the task at 600 hours of work and assign those resources. The result will be 20 days duration if each operator works 10 hour days. If you also need to account for the equipment, define it as a material resources with a cost of $x as the total cost of the 20 day rental. Assign it to the same task. You can set up the material resource costs to all be incurred at the start/finish, or prorated across the entire task duration.