Paradigm task grids allow you to create tasks with parent-child relationships.
1. Select an existing task line to which you want to add a sub-task to.
2. When the task line is selected, select the Sub-Tasks tab on the grid toolbar on the right-hand side of the screen.
3. Click on the field to add a sub-task.
4. Follow the same process to add more sub-tasks to the parent task.