Within Teamwork, you can quickly edit existing task descriptions.
In Table view, the task description can be added as an individual column. Clicking an existing description will activate the field in edit mode allowing you to update the text.
Pressing Enter on your keyboard or clicking away from the field will save your changes.
In List view, click the More link to the right of the task name to expand the description.
Note: This option will only be visible if the task has an existing description.
Hover over the description area and click the edit pencil on the right to open the description in edit mode.
In the individual task details view, click the View Description option to expand the description.
You can then hover over the description and click the Edit button on the right to update it.
For more information, see: Quickly Adding Subtasks