Duration en workload- two different things- How to register?
How can i register 60hours of work dividend over three months?
Or can i register that one employee works 2 days (16h) -on a specific project- a week & the job is done within three weeks, so the total workload is 48 hours?
You can adjust the "Units" in the "Resources" tab of the "Task Properties" to achieve this. You can get to the "Task Properties" screen by double-clicking on task in the Gantter editor.
For example, if you have a task with one resource assigned at 12.5% and a duration of 3 months then this will result in 60 hours work.
Another way you can do this is to break up the one task into a summary task with multiple sub-tasks. For example, if you want the employee to work on a task for 2 days each week, you can represent as multiple 2 day tasks.