Within Teamwork, you can pin task lists so they remain open on your project.
By default, the task list will be hidden from the main Tasks area when all tasks in a task list have been completed.
You will see these lists under Completed Task Lists in the task lists panel on the left of the Tasks area.
To pin an active task list, hover over the task list name in the Tasks area and click the options menu (three dots). You can then select Pin this List from the dropdown menu.
Once the task list is pinned, it will always remain in the Tasks area unless you unpin it.
To unpin a task list, click the Unpin icon next to the task list name.
You can also unpin a task list via the task list options again and select Unpin this List.
To pin an already completed task list, select the list from the Completed Task Lists area to open it. While viewing the task list, click the options button (three dots) in the top right and select Pin this List. The task list will be moved back to the active lists section.
Note: Only administrators or users with permission to update task lists can change this setting.
For more information, see: Creating a Task List