Traditional projects have a Roll Ups feature that you can see on the Tasks tab for your project. When looking at the list view of your project, you have the option to expand and collapse the phases and tasks; that’s where you will notice this feature.
When creating your project, you may have already entered your desired start and end dates, expenses, and etc.. You can do the same thing for your projects phases and tasks. Once you enter that information, you’ll see that it will affect the project overall.
For example, in the screenshot below you’ll notice that the tasks, phases, and milestones all have their own individual durations and work hours. Notice that the duration for none of the phases, tasks, or milestones exceed the duration for the project itself. As the dates for the phases and tasks are extended, so is the whole project.
In the duration column, you’ll notice that the work hours for all the phases and tasks add up to give you the total amount of hours for the entire project. This is where the term “roll ups” comes from; as you go up the column, you’ll notice that the hours are added for the each phase and task as well, not just the project.