Is this regarding Producteev? -- If so, unfortunately no. Subtasks are just a part of a task and not individually assignable.
Thanks, Nick - yes, it is Producteev. I forgot you support a lot of apps
Another question - is there a view that expands all subtasks for all tasks? I can expand subtasks for one task by clicking on it, but it would be great if every task was expanded with its subtasks.