Switch to Gantt on the Tasks page. Main tasks are the groups; a subtask with a start and a due date is a bar. Hide main tasks shows the subtasks alone. Drag a bar to move it, or drag an edge to change its dates.

Link two tasks

1. Press Link tasks.
2. Click the start or the end of the first task.
3. Click the start or the end of the second task.
4. Press Done linking.

Which ends you click sets the kind of link, shown by its colour:

• Finish → Start: the usual one. The second task starts after the first ends.
• Start → Start: they start together.
• Finish → Finish: they end together.
• Start → Finish: the second ends when the first starts.

Calendar

Calendar shows the same dated tasks by month or week.