1 - To add a subtask within a task, click on the task to open its properties.
2 - Scroll down to the Subtasks section and type in the blank box where you see the “+ Add subtask”.
3 - If you want to create multiple subtasks at once, have them listed by pressing combined “Shift + Enter” keys, then hit Enter.
3 - A pop-up window will appear to confirm whether you want to create 1 subtask or X number of subtasks.
3 - Hit Enter to create.