Enable Roll-up while creating a new project

1. Navigate to Projects list view.
2. Click New Project. 
3. Fill in the project details and check Roll-up option.
4. Start date, end date, and % completion are rolled up from tasks/subtasks to milestones and project.
5. Start date, end date, % completion, work hours, and log hours are rolled up from subtasks to tasks.
   

• A dependent task cannot be made a subtask when roll-up is enabled.
• Dependencies cannot be set between subtasks and its parent when Roll-up is enabled.
• Strict Project start and end dates will not change with change in subtask dates.
• Subtasks start and end dates should fall within the date range of a strict project.
  

1. Roll-up cannot be enabled if there are dependencies between subtasks and their parent task.
   
2. Roll-up cannot be enabled if a parent task has work hours or log hours.