Hi,

I would create a fixed-duration task signifying the machine work using the 24 hours calendar as a task calendar assigned to the task.

Assign a resource and enter your work estimate for the resource during the assignment. Project will spread the total resource work out evenly across the duration.

If needed, you can go to the Task Usage view and edit the actual spread of work -- but many of us would not. We'd just allow the spread for planning purposes, knowing that in reality instead of .50 hour per day for 10 days, the resource may work 2 hours on Wednesday, 3 hours the following Monday and none in between.

I hope this helps.

Julie