I am using PL to manage scientific projects.

I have projects with many fixed time tasks, such as exactly 1 month, exactly 3 months, exactly 1 year etc.

These tasks require no resources and occur 7 days a week /24 hours a day - they are based on clock-time or calendar time, not people working time.

How do I get PL to correctly list their duration?

For example, I may have to wait 30 days or 1 year to complete a stability study before I can start next step of project - I want that in the project plan.

Task starts November 1st and ends November 30th.

How do I set the calendar or task to correctly display task duration of 30 days?

Thanks,
Frank