A subtask is a task within a task. Subtasks are part of the Dart hierarchy and pieces of larger tasks broken down into more manageable parts.
In a list layout, you will be able to see a subtask icon with the number of subtasks labeled:
In a board layout, a subtask will show as slightly indented under the main task:
Within the roadmap layout, the subtasks also show as indented under the main task:
When you open a task with subtasks, you will see your subtasks (and their status) to the right of your task window:
When a task window is open, you can add a new subtask, update an existing subtask status, or open a subtask in order to add more information.
Adding tasks and subtasks from your dartboard
You can add tasks or subtasks from your dartboard without opening a task using the arrow icons or your tab key. To add a subtask to a task, select the task or subtask, and click on the arrow beside the task title or hit tab. From here, you will be able to enter a subtask title and then open the subtask to add in any further details:
Using Dart AI to make subtasks
When you have a task and would like to add subtasks, you can do so manually, or you can leverage Dart AI to help you write subtasks for the task.
First, ensure your task has at least a title that describes the task. Then, use the Task AI button at the top of your task window or the slash command in your product description to request the AI to create subtasks. You will be able to edit these suggestions, delete them, or add other subtasks afterward as well:
Delete or replicate subtasks
You can replicate subtasks. You can also delete them. To do so, open the subtask. Then, choose the "more" icon at the top right of your subtask window and select "replicate" to make a copy" or "delete" to remove the subtask from the task:
Subtasks and task size
You can size your tasks to understand how big or small they are in relation to other tasks in your project. Sizes add up inside of subtasks. For example, if you have 2 subtasks of a main task, one with a size of "1" and another with a size of "2" then the parent will by default show size "3." You can learn more about size here.