When planning tasks for a project, is it then possible to define the duration in hours instead of days?
Yes, we can use either days, hours, or a mix of the two. So depending on the template that you set up for your project, if you decided to use days for example, you can still type in whatever unit (hours or days) when planning the task, and then the project planning app will automatically convert them to the template format. In this case, 2 hours would automatically be converted to 0.25 days.