OrgTask View shows your task in organizational chart. Use OrgTask View to view your all tasks and subtasks in parent-child relation. When you create a project you can select List view as default and change it to another view later.
Tasks will be shown as boxes (nodes) in OrgTask View.
To add a new task (node) click on a task and add your child task in Task Dialog > Subtasks section.
You can drag and drop tasks onto other tasks to change parent. Please see drag&drop page for more information.
Change View Modes
Please see View Modes page for changing views.